Subject  | Description | Entries | Users |
| aero. | Aeronautica / Aviation | 29 | 452 |
| agr. | Agraria / Agriculture, Aquaculture | 32 | 278 |
| aliment. | Industria Alimentare / Foodstuffs Industry | 11 | 305 |
| alp. | Alpinismo / Climbing, Mountaineering | 2 | 251 |
| amb. | Ambiente / Ecology, Environment | 3 | 704 |
| amm. | Amministrazione (pubblica) / (Public) Administration | 17 | 409 |
| anat. | Anatomia / Human Anatomy | 165 | 511 |
| arald. | Araldica / Heraldry | 2 | 100 |
| archeo. | Archeologia / Archaeology | 10 | 361 |
| archi. | Architettura / Architecture | 72 | 471 |
| armi | Armi / Weapons | 19 | 382 |
| arte | Arte / Art | 36 | 1168 |
| assic. | Assicurazioni / Insurance | 6 | 166 |
| astron. | Astronomia / Astronomy | 48 | 592 |
| astronau | Astronautica / Astronautics | 4 | 322 |
| attr. | Attrezzo / Tools | 25 | 471 |
| audio | Audiologia, Acustica / Audiology | 4 | 195 |
| automob. | Automobili / Automotive Engineering | 24 | 484 |
| bibl. | Bibbia / Biblical | 4 | 369 |
| bici | Bicicletta / Bicycle | 1 | 502 |
| biochim. | Biochimica / Biochemistry | 33 | 320 |
| biol. | Biologia / Biology | 111 | 660 |
| biotec. | Biotecnologia / Biotechnology | 2 | 280 |
| birr. | Birrificazione / Brewing | 2 | 160 |
| bot. | Botanica / Botany, Plants | 262 | 399 |
| chim. | Chimica / Chemistry | 308 | 530 |
| cit. | Citazione / Quotation | 1 | 474 |
| comm. | Commercio, distribuzione / Commerce | 102 | 542 |
| comp. | Computer / Computer Sciences | 43 | 1580 |
| contab. | Contabilità / Accounting | 7 | 411 |
| cosm. | Cosmetica e cura del corpo / Cosmetics & Body Care | 21 | 257 |
| danza | Danza / Dance | 1 | 383 |
| dir. | Diritto / Law | 94 | 581 |
| econ. | Economia / Economy | 27 | 903 |
| edil. | Edilizia / Construction | 14 | 324 |
| editoria | Editoria / Publishing | 10 | 254 |
| educ. | Educazione / Education | 29 | 1189 |
| elettr. | Elettronica, elettrotecnica / Electrical Engin., Electronics | 35 | 671 |
| enol. | Enologia / Oenology | 6 | 126 |
| entom. | Entomologia / Entomology | 22 | 105 |
| equit. | Equitazione, Cavalli / Equestrianism, Horses | 7 | 131 |
| esot. | Esoterismo / Esotericism | 6 | 230 |
| etn. | Etnologia / Ethnology | 7 | 269 |
| F | Nomi e titoli in letteratura, film, tv, arte / Fiction: Names and Titles in Literature, Film, TV, Arts | 81 | 793 |
| farm. | Farmacia / Pharmacy | 36 | 288 |
| filat. | Filatelia / Philately | 4 | 61 |
| film | Film / Film | 74 | 1275 |
| filos. | Filosofia / Philosophy | 34 | 920 |
| fin. | Finanza / Finance | 49 | 575 |
| fis. | Fisica / Physics | 67 | 786 |
| fonet. | Fonetica / Phonetics | 8 | 397 |
| foto. | Fotografia / Photography | 15 | 810 |
| fumetti | Fumetti e Cartoni Animati / Comics and Animated Cartoons | 2 | 349 |
| gastr. | Gastronomia / Gastronomy, Cooking | 301 | 646 |
| geogr. | Geografia / Geography | 195 | 834 |
| geol. | Geologia / Geology | 46 | 288 |
| gioca. | Giocattoli / Toys | 5 | 217 |
| giochi | Giochi / Games | 19 | 866 |
| gior. | Giornalismo / Journalism | 9 | 431 |
| idro. | Idrologia & Idrogeologia / Hydrology & Hydrogeology | 4 | 108 |
| immob. | Immobili / Real Estate | 6 | 238 |
| ind. | Industria / Industry | 11 | 485 |
| internet | Internet / Internet | 9 | 1408 |
| ittiol. | Ittiologia, pesca / Ichthyology, fish, fishing | 37 | 110 |
| lett. | Letteratura / Literature | 81 | 1196 |
| libri | Libri / Library Science | 3 | 183 |
| ling. | Linguistica / Linguistics | 89 | 1371 |
| loc. | Locuzione / Idiom | 39 | 710 |
| market. | Marketing / Marketing, Advertising | 1 | 541 |
| mat. | Matematica / Mathematics | 77 | 787 |
| material | Scienza dei Materiali / Materials Science | 3 | 276 |
| med. | Medicina / Medicine | 366 | 812 |
| meteo. | Meteorologia / Meteorology | 32 | 220 |
| micol. | Micologia / Mycology | 5 | 113 |
| mil. | Arte militare / Military | 50 | 397 |
| mineral. | Mineralogia / Mineralogy | 19 | 148 |
| miniera | Miniera / Mining & Drilling | 3 | 110 |
| mitol. | Mitologia / Mythology | 59 | 496 |
| mobili | Mobili / Furniture | 17 | 228 |
| mus. | Musica / Music | 109 | 1699 |
| naut. | Nautica / Nautical Science | 62 | 212 |
| nucl. | Ingegneria Nucleare / Nuclear Engineering | 1 | 174 |
| odonto | Odontoiatria / Dental Medicine | 15 | 129 |
| onomast. | Onomastica / Names of Persons | 7 | 213 |
| orn. | Ornitologia / Ornithology | 344 | 146 |
| orol. | Orologi / Watches, Clocks | 8 | 201 |
| ortic. | Orticoltura / Horticulture | 1 | 240 |
| ottica | Ottica / Optics | 5 | 167 |
| pol. | Politica / Politics | 76 | 958 |
| prof. | Professione / Jobs, Employment Market | 108 | 573 |
| prov. | Proverbio / Proverb | 14 | 602 |
| psic. | Psicologia / Psychology | 38 | 894 |
| RadioTV | Televisione e radio / Radio and Television | 3 | 544 |
| relig. | Religione / Religion | 110 | 668 |
| retor. | Retorica / Rhetoric | 4 | 400 |
| scienza | Scienza / Academic Disciplines | 93 | 1550 |
| selv. | Selvicoltura / Forestry | 12 | 166 |
| SocFuoc. | Servizio di soccorso e protezione antincendio / Firefighting & Rescue | 2 | 129 |
| sociol. | Sociologia / Sociology | 21 | 525 |
| spec. | Di linguaggio speciale / Specialized Term | 3 | 354 |
| sport | Sport / Sports | 85 | 936 |
| stat. | Statistica / Statistics | 9 | 333 |
| stor. | Storia / History | 55 | 1296 |
| stupef. | Stupefacenti / Drugs | 5 | 260 |
| T | T / Taxonomic terms for animals, plants and fungi (incl. varieties and breeds) | 931 | 2 |
| teatro | Teatro / Theatre | 29 | 491 |
| tec. | Tecnica / Technology | 74 | 1204 |
| TecMed. | Tecnologia Medica / Medical Engineering & Imaging | 5 | 246 |
| telecom. | Telecomunicazione / Telecommunications | 8 | 526 |
| tessili | Tessili, Industria tessile / Textiles, Textile Industry | 10 | 154 |
| tip. | Tipografia / Print, Typography, Layout | 3 | 273 |
| TM | Marchi Registrati [©™®] / Trademarks, Brand Names | 1 | 105 |
| traff. | Traffico / Traffic | 56 | 307 |
| trasp. | Trasporti (trasporto via terra) / Transportation (Land Transport) | 2 | 322 |
| treno | Treno / Rail | 7 | 214 |
| turismo | Turismo / Travel Industry | 21 | 521 |
| unità | Unità di misura / Units, Measures, Weights | 11 | 421 |
| urban. | Urbanistica / Urban Planning | 11 | 222 |
| valuta | Valuta / Currencies | 2 | 255 |
| vest. | Vestiti e moda / Clothing, Fashion | 55 | 447 |
| VetMed. | Medicina Veterinaria / Veterinary Medicine | 1 | 166 |
| VocVia. | Vocabolario di viaggio / Travellers vocabulary | 3 | 677 |
| zool. | Zoologia / Zoology, Animals | 464 | 654 |
