Subject  | Description | Entries | Users |
| aero. | Aeronautica / Aviation | 30 | 462 |
| agr. | Agraria / Agriculture, Aquaculture | 35 | 282 |
| aliment. | Industria Alimentare / Foodstuffs Industry | 13 | 308 |
| alp. | Alpinismo / Climbing, Mountaineering | 2 | 254 |
| amb. | Ambiente / Ecology, Environment | 7 | 719 |
| amm. | Amministrazione (pubblica) / (Public) Administration | 17 | 413 |
| anat. | Anatomia / Human Anatomy | 169 | 516 |
| arald. | Araldica / Heraldry | 2 | 103 |
| archeo. | Archeologia / Archaeology | 13 | 363 |
| archi. | Architettura / Architecture | 78 | 474 |
| armi | Armi / Weapons | 20 | 384 |
| arte | Arte / Art | 44 | 1180 |
| assic. | Assicurazioni / Insurance | 6 | 168 |
| astron. | Astronomia / Astronomy | 48 | 602 |
| astronau | Astronautica / Astronautics | 4 | 330 |
| attr. | Attrezzo / Tools | 25 | 477 |
| audio | Audiologia, Acustica / Audiology | 4 | 200 |
| automob. | Automobili / Automotive Engineering | 24 | 494 |
| bibl. | Bibbia / Biblical | 4 | 372 |
| bici | Bicicletta / Bicycle | 1 | 512 |
| biochim. | Biochimica / Biochemistry | 33 | 324 |
| biol. | Biologia / Biology | 125 | 671 |
| biotec. | Biotecnologia / Biotechnology | 2 | 283 |
| birr. | Birrificazione / Brewing | 2 | 161 |
| bot. | Botanica / Botany, Plants | 266 | 405 |
| chim. | Chimica / Chemistry | 314 | 538 |
| cit. | Citazione / Quotation | 1 | 477 |
| comm. | Commercio, distribuzione / Commerce | 104 | 550 |
| comp. | Computer / Computer Sciences | 47 | 1612 |
| contab. | Contabilità / Accounting | 7 | 413 |
| cosm. | Cosmetica e cura del corpo / Cosmetics & Body Care | 22 | 260 |
| danza | Danza / Dance | 1 | 383 |
| dir. | Diritto / Law | 94 | 583 |
| econ. | Economia / Economy | 32 | 914 |
| edil. | Edilizia / Construction | 16 | 332 |
| editoria | Editoria / Publishing | 10 | 256 |
| educ. | Educazione / Education | 30 | 1200 |
| elettr. | Elettronica, elettrotecnica / Electrical Engin., Electronics | 38 | 686 |
| enol. | Enologia / Oenology | 6 | 126 |
| entom. | Entomologia / Entomology | 25 | 109 |
| equit. | Equitazione, Cavalli / Equestrianism, Horses | 7 | 133 |
| esot. | Esoterismo / Esotericism | 10 | 235 |
| etn. | Etnologia / Ethnology | 8 | 280 |
| F | Nomi e titoli in letteratura, film, tv, arte / Fiction: Names and Titles in Literature, Film, TV, Arts | 204 | 804 |
| farm. | Farmacia / Pharmacy | 36 | 292 |
| filat. | Filatelia / Philately | 5 | 63 |
| film | Film / Film | 87 | 1285 |
| filos. | Filosofia / Philosophy | 47 | 937 |
| fin. | Finanza / Finance | 49 | 583 |
| fis. | Fisica / Physics | 71 | 797 |
| fonet. | Fonetica / Phonetics | 8 | 403 |
| foto. | Fotografia / Photography | 15 | 819 |
| fumetti | Fumetti e Cartoni Animati / Comics and Animated Cartoons | 37 | 351 |
| gastr. | Gastronomia / Gastronomy, Cooking | 311 | 656 |
| geogr. | Geografia / Geography | 201 | 851 |
| geol. | Geologia / Geology | 48 | 293 |
| gioca. | Giocattoli / Toys | 5 | 221 |
| giochi | Giochi / Games | 21 | 878 |
| gior. | Giornalismo / Journalism | 9 | 437 |
| idro. | Idrologia & Idrogeologia / Hydrology & Hydrogeology | 4 | 108 |
| immob. | Immobili / Real Estate | 6 | 238 |
| ind. | Industria / Industry | 12 | 492 |
| ingeg. | Ingegneria / Engineering | 1 | 927 |
| internet | Internet / Internet | 9 | 1422 |
| ittiol. | Ittiologia, pesca / Ichthyology, fish, fishing | 44 | 110 |
| lett. | Letteratura / Literature | 201 | 1215 |
| libri | Libri / Library Science | 6 | 186 |
| ling. | Linguistica / Linguistics | 93 | 1391 |
| loc. | Locuzione / Idiom | 39 | 710 |
| market. | Marketing / Marketing, Advertising | 1 | 547 |
| mat. | Matematica / Mathematics | 78 | 800 |
| material | Scienza dei Materiali / Materials Science | 3 | 281 |
| med. | Medicina / Medicine | 394 | 823 |
| meteo. | Meteorologia / Meteorology | 35 | 224 |
| micol. | Micologia / Mycology | 5 | 114 |
| mil. | Arte militare / Military | 51 | 400 |
| mineral. | Mineralogia / Mineralogy | 19 | 150 |
| miniera | Miniera / Mining & Drilling | 3 | 111 |
| mitol. | Mitologia / Mythology | 63 | 506 |
| mobili | Mobili / Furniture | 17 | 230 |
| mus. | Musica / Music | 111 | 1719 |
| naut. | Nautica / Nautical Science | 63 | 216 |
| nucl. | Ingegneria Nucleare / Nuclear Engineering | 1 | 177 |
| odonto | Odontoiatria / Dental Medicine | 15 | 130 |
| onomast. | Onomastica / Names of Persons | 7 | 216 |
| orn. | Ornitologia / Ornithology | 375 | 147 |
| orol. | Orologi / Watches, Clocks | 8 | 203 |
| ortic. | Orticoltura / Horticulture | 2 | 243 |
| ottica | Ottica / Optics | 5 | 170 |
| pol. | Politica / Politics | 106 | 971 |
| prof. | Professione / Jobs, Employment Market | 114 | 579 |
| prov. | Proverbio / Proverb | 14 | 608 |
| psic. | Psicologia / Psychology | 42 | 902 |
| RadioTV | Televisione e radio / Radio and Television | 3 | 552 |
| relig. | Religione / Religion | 134 | 676 |
| retor. | Retorica / Rhetoric | 5 | 403 |
| scienza | Scienza / Academic Disciplines | 111 | 1574 |
| selv. | Selvicoltura / Forestry | 13 | 169 |
| SocFuoc. | Servizio di soccorso e protezione antincendio / Firefighting & Rescue | 2 | 131 |
| sociol. | Sociologia / Sociology | 25 | 533 |
| spec. | Di linguaggio speciale / Specialized Term | 4 | 357 |
| sport | Sport / Sports | 96 | 948 |
| stat. | Statistica / Statistics | 9 | 337 |
| stor. | Storia / History | 56 | 1308 |
| stupef. | Stupefacenti / Drugs | 5 | 262 |
| T | T / Taxonomic terms for animals, plants and fungi (incl. varieties and breeds) | 973 | 6 |
| teatro | Teatro / Theatre | 35 | 496 |
| tec. | Tecnica / Technology | 77 | 1222 |
| TecMed. | Tecnologia Medica / Medical Engineering & Imaging | 6 | 250 |
| telecom. | Telecomunicazione / Telecommunications | 9 | 531 |
| tessili | Tessili, Industria tessile / Textiles, Textile Industry | 10 | 156 |
| tip. | Tipografia / Print, Typography, Layout | 3 | 276 |
| TM | Marchi Registrati [©™®] / Trademarks, Brand Names | 1 | 105 |
| traff. | Traffico / Traffic | 56 | 311 |
| trasp. | Trasporti (trasporto via terra) / Transportation (Land Transport) | 2 | 329 |
| treno | Treno / Rail | 7 | 217 |
| turismo | Turismo / Travel Industry | 21 | 530 |
| unità | Unità di misura / Units, Measures, Weights | 11 | 424 |
| urban. | Urbanistica / Urban Planning | 11 | 226 |
| valuta | Valuta / Currencies | 2 | 260 |
| vest. | Vestiti e moda / Clothing, Fashion | 55 | 451 |
| VetMed. | Medicina Veterinaria / Veterinary Medicine | 1 | 169 |
| VocVia. | Vocabolario di viaggio / Travellers vocabulary | 4 | 683 |
| zool. | Zoologia / Zoology, Animals | 472 | 658 |
