Subject  | Description | Entries | Users |
| aero. | Aeronautica / Aviation | 321 | 516 |
| agr. | Agraria / Agriculture, Aquaculture | 383 | 310 |
| aliment. | Industria Alimentare / Foodstuffs Industry | 304 | 322 |
| alp. | Alpinismo / Climbing, Mountaineering | 73 | 277 |
| amb. | Ambiente / Ecology, Environment | 257 | 773 |
| amm. | Amministrazione (pubblica) / (Public) Administration | 895 | 445 |
| anat. | Anatomia / Human Anatomy | 1467 | 566 |
| arald. | Araldica / Heraldry | 17 | 120 |
| archeo. | Archeologia / Archaeology | 95 | 400 |
| archi. | Architettura / Architecture | 692 | 522 |
| armature | Armature / Historic Armour | 10 | 162 |
| armi | Armi / Weapons | 404 | 424 |
| arte | Arte / Art | 604 | 1293 |
| assic. | Assicurazioni / Insurance | 293 | 182 |
| astron. | Astronomia / Astronomy | 326 | 682 |
| astronau | Astronautica / Astronautics | 35 | 375 |
| attr. | Attrezzo / Tools | 581 | 539 |
| audio | Audiologia, Acustica / Audiology | 92 | 235 |
| automob. | Automobili / Automotive Engineering | 577 | 541 |
| bibl. | Bibbia / Biblical | 50 | 416 |
| bici | Bicicletta / Bicycle | 44 | 561 |
| biochim. | Biochimica / Biochemistry | 150 | 363 |
| biol. | Biologia / Biology | 402 | 737 |
| biotec. | Biotecnologia / Biotechnology | 6 | 312 |
| birr. | Birrificazione / Brewing | 41 | 174 |
| borsa | Borsa / Stock Exchange | 60 | 281 |
| bot. | Botanica / Botany, Plants | 1546 | 442 |
| caccia | Caccia / Hunting | 50 | 137 |
| chim. | Chimica / Chemistry | 1028 | 600 |
| cit. | Citazione / Quotation | 5 | 499 |
| comm. | Commercio, distribuzione / Commerce | 1058 | 576 |
| comp. | Computer / Computer Sciences | 381 | 1779 |
| contab. | Contabilità / Accounting | 138 | 440 |
| cosm. | Cosmetica e cura del corpo / Cosmetics & Body Care | 208 | 279 |
| danza | Danza / Dance | 53 | 413 |
| dir. | Diritto / Law | 2290 | 633 |
| econ. | Economia / Economy | 1685 | 987 |
| edil. | Edilizia / Construction | 445 | 361 |
| editoria | Editoria / Publishing | 232 | 284 |
| educ. | Educazione / Education | 746 | 1310 |
| elettr. | Elettronica, elettrotecnica / Electrical Engin., Electronics | 324 | 754 |
| enol. | Enologia / Oenology | 195 | 133 |
| entom. | Entomologia / Entomology | 189 | 118 |
| equit. | Equitazione, Cavalli / Equestrianism, Horses | 104 | 140 |
| esot. | Esoterismo / Esotericism | 36 | 261 |
| etn. | Etnologia / Ethnology | 208 | 299 |
| F | Nomi e titoli in letteratura, film, tv, arte / Fiction: Names and Titles in Literature, Film, TV, Arts | 371 | 867 |
| farm. | Farmacia / Pharmacy | 280 | 312 |
| filat. | Filatelia / Philately | 7 | 66 |
| film | Film / Film | 339 | 1377 |
| filos. | Filosofia / Philosophy | 207 | 1033 |
| fin. | Finanza / Finance | 1608 | 621 |
| fis. | Fisica / Physics | 590 | 870 |
| fonet. | Fonetica / Phonetics | 13 | 450 |
| foto. | Fotografia / Photography | 77 | 875 |
| fumetti | Fumetti e Cartoni Animati / Comics and Animated Cartoons | 47 | 383 |
| gastr. | Gastronomia / Gastronomy, Cooking | 3047 | 706 |
| geogr. | Geografia / Geography | 1006 | 939 |
| geol. | Geologia / Geology | 256 | 331 |
| gioca. | Giocattoli / Toys | 41 | 244 |
| giochi | Giochi / Games | 179 | 989 |
| gior. | Giornalismo / Journalism | 185 | 477 |
| GQ | Gestione della qualità / Quality Management | 24 | 298 |
| idro. | Idrologia & Idrogeologia / Hydrology & Hydrogeology | 241 | 120 |
| immob. | Immobili / Real Estate | 263 | 250 |
| ind. | Industria / Industry | 196 | 545 |
| ingeg. | Ingegneria / Engineering | 26 | 1039 |
| internet | Internet / Internet | 71 | 1560 |
| ittiol. | Ittiologia, pesca / Ichthyology, fish, fishing | 376 | 117 |
| lett. | Letteratura / Literature | 570 | 1344 |
| libri | Libri / Library Science | 37 | 207 |
| ling. | Linguistica / Linguistics | 806 | 1539 |
| loc. | Locuzione / Idiom | 40 | 708 |
| market. | Marketing / Marketing, Advertising | 94 | 576 |
| mat. | Matematica / Mathematics | 1303 | 902 |
| material | Scienza dei Materiali / Materials Science | 469 | 315 |
| med. | Medicina / Medicine | 2517 | 904 |
| meteo. | Meteorologia / Meteorology | 522 | 251 |
| micol. | Micologia / Mycology | 41 | 124 |
| mil. | Arte militare / Military | 1003 | 449 |
| mineral. | Mineralogia / Mineralogy | 145 | 167 |
| miniera | Miniera / Mining & Drilling | 74 | 119 |
| mitol. | Mitologia / Mythology | 120 | 553 |
| mobili | Mobili / Furniture | 261 | 249 |
| mus. | Musica / Music | 677 | 1857 |
| naut. | Nautica / Nautical Science | 509 | 233 |
| neol. | Neologismo / Neologisms | 2 | 194 |
| nucl. | Ingegneria Nucleare / Nuclear Engineering | 31 | 196 |
| odonto | Odontoiatria / Dental Medicine | 86 | 138 |
| onomast. | Onomastica / Names of Persons | 17 | 244 |
| orn. | Ornitologia / Ornithology | 1633 | 163 |
| orol. | Orologi / Watches, Clocks | 57 | 217 |
| ortic. | Orticoltura / Horticulture | 104 | 260 |
| ottica | Ottica / Optics | 80 | 187 |
| pol. | Politica / Politics | 1896 | 1072 |
| prof. | Professione / Jobs, Employment Market | 2551 | 620 |
| prov. | Proverbio / Proverb | 19 | 657 |
| psic. | Psicologia / Psychology | 542 | 988 |
| RadioTV | Televisione e radio / Radio and Television | 170 | 583 |
| relig. | Religione / Religion | 692 | 736 |
| retor. | Retorica / Rhetoric | 27 | 434 |
| scienza | Scienza / Academic Disciplines | 484 | 1762 |
| selv. | Selvicoltura / Forestry | 54 | 183 |
| SocFuoc. | Servizio di soccorso e protezione antincendio / Firefighting & Rescue | 88 | 148 |
| sociol. | Sociologia / Sociology | 953 | 594 |
| spec. | Di linguaggio speciale / Specialized Term | 12 | 395 |
| sport | Sport / Sports | 1226 | 1011 |
| stat. | Statistica / Statistics | 98 | 388 |
| stor. | Storia / History | 518 | 1452 |
| stupef. | Stupefacenti / Drugs | 56 | 297 |
| T | T / Taxonomic terms for animals, plants and fungi (incl. varieties and breeds) | 4196 | 19 |
| teatro | Teatro / Theatre | 265 | 534 |
| tec. | Tecnica / Technology | 1165 | 1385 |
| TecMed. | Tecnologia Medica / Medical Engineering & Imaging | 79 | 276 |
| telecom. | Telecomunicazione / Telecommunications | 170 | 570 |
| tessili | Tessili, Industria tessile / Textiles, Textile Industry | 198 | 171 |
| tip. | Tipografia / Print, Typography, Layout | 109 | 302 |
| TM | Marchi Registrati [©™®] / Trademarks, Brand Names | 1 | 105 |
| traff. | Traffico / Traffic | 556 | 345 |
| trasp. | Trasporti (trasporto via terra) / Transportation (Land Transport) | 299 | 369 |
| treno | Treno / Rail | 200 | 239 |
| turismo | Turismo / Travel Industry | 489 | 567 |
| UE | Unione Europea / European Union | 32 | 729 |
| unità | Unità di misura / Units, Measures, Weights | 77 | 458 |
| urban. | Urbanistica / Urban Planning | 166 | 259 |
| uWH | UNESCO / UNESCO World Heritage | 5 | 291 |
| valuta | Valuta / Currencies | 67 | 283 |
| vest. | Vestiti e moda / Clothing, Fashion | 711 | 488 |
| VetMed. | Medicina Veterinaria / Veterinary Medicine | 38 | 178 |
| VocVia. | Vocabolario di viaggio / Travellers vocabulary | 165 | 738 |
| zool. | Zoologia / Zoology, Animals | 1849 | 702 |
