Subject  | Description | Entries | Users |
| aero. | Aeronautica / Aviation | 30 | 469 |
| agr. | Agraria / Agriculture, Aquaculture | 36 | 291 |
| aliment. | Industria Alimentare / Foodstuffs Industry | 13 | 309 |
| alp. | Alpinismo / Climbing, Mountaineering | 3 | 258 |
| amb. | Ambiente / Ecology, Environment | 7 | 731 |
| amm. | Amministrazione (pubblica) / (Public) Administration | 18 | 422 |
| anat. | Anatomia / Human Anatomy | 173 | 522 |
| arald. | Araldica / Heraldry | 3 | 105 |
| archeo. | Archeologia / Archaeology | 13 | 370 |
| archi. | Architettura / Architecture | 80 | 482 |
| armi | Armi / Weapons | 23 | 392 |
| arte | Arte / Art | 45 | 1193 |
| assic. | Assicurazioni / Insurance | 6 | 170 |
| astron. | Astronomia / Astronomy | 48 | 612 |
| astronau | Astronautica / Astronautics | 4 | 338 |
| attr. | Attrezzo / Tools | 30 | 484 |
| audio | Audiologia, Acustica / Audiology | 4 | 206 |
| automob. | Automobili / Automotive Engineering | 29 | 500 |
| bibl. | Bibbia / Biblical | 4 | 383 |
| bici | Bicicletta / Bicycle | 1 | 516 |
| biochim. | Biochimica / Biochemistry | 33 | 329 |
| biol. | Biologia / Biology | 125 | 682 |
| biotec. | Biotecnologia / Biotechnology | 2 | 288 |
| birr. | Birrificazione / Brewing | 2 | 164 |
| bot. | Botanica / Botany, Plants | 270 | 410 |
| chim. | Chimica / Chemistry | 324 | 546 |
| cit. | Citazione / Quotation | 1 | 482 |
| comm. | Commercio, distribuzione / Commerce | 109 | 556 |
| comp. | Computer / Computer Sciences | 55 | 1638 |
| contab. | Contabilità / Accounting | 7 | 418 |
| cosm. | Cosmetica e cura del corpo / Cosmetics & Body Care | 29 | 265 |
| danza | Danza / Dance | 2 | 386 |
| dir. | Diritto / Law | 103 | 589 |
| econ. | Economia / Economy | 32 | 923 |
| edil. | Edilizia / Construction | 18 | 337 |
| editoria | Editoria / Publishing | 12 | 260 |
| educ. | Educazione / Education | 37 | 1223 |
| elettr. | Elettronica, elettrotecnica / Electrical Engin., Electronics | 41 | 690 |
| enol. | Enologia / Oenology | 6 | 127 |
| entom. | Entomologia / Entomology | 27 | 109 |
| equit. | Equitazione, Cavalli / Equestrianism, Horses | 7 | 133 |
| esot. | Esoterismo / Esotericism | 10 | 239 |
| etn. | Etnologia / Ethnology | 8 | 283 |
| F | Nomi e titoli in letteratura, film, tv, arte / Fiction: Names and Titles in Literature, Film, TV, Arts | 205 | 812 |
| farm. | Farmacia / Pharmacy | 39 | 292 |
| filat. | Filatelia / Philately | 5 | 63 |
| film | Film / Film | 87 | 1297 |
| filos. | Filosofia / Philosophy | 53 | 953 |
| fin. | Finanza / Finance | 51 | 593 |
| fis. | Fisica / Physics | 81 | 805 |
| fonet. | Fonetica / Phonetics | 8 | 408 |
| foto. | Fotografia / Photography | 15 | 830 |
| fumetti | Fumetti e Cartoni Animati / Comics and Animated Cartoons | 37 | 358 |
| gastr. | Gastronomia / Gastronomy, Cooking | 322 | 666 |
| geogr. | Geografia / Geography | 202 | 869 |
| geol. | Geologia / Geology | 50 | 298 |
| gioca. | Giocattoli / Toys | 5 | 225 |
| giochi | Giochi / Games | 27 | 899 |
| gior. | Giornalismo / Journalism | 9 | 444 |
| idro. | Idrologia & Idrogeologia / Hydrology & Hydrogeology | 5 | 109 |
| immob. | Immobili / Real Estate | 6 | 240 |
| ind. | Industria / Industry | 12 | 500 |
| ingeg. | Ingegneria / Engineering | 1 | 939 |
| internet | Internet / Internet | 15 | 1453 |
| ittiol. | Ittiologia, pesca / Ichthyology, fish, fishing | 44 | 113 |
| lett. | Letteratura / Literature | 202 | 1239 |
| libri | Libri / Library Science | 7 | 191 |
| ling. | Linguistica / Linguistics | 99 | 1415 |
| loc. | Locuzione / Idiom | 39 | 710 |
| market. | Marketing / Marketing, Advertising | 1 | 551 |
| mat. | Matematica / Mathematics | 96 | 810 |
| material | Scienza dei Materiali / Materials Science | 3 | 285 |
| med. | Medicina / Medicine | 436 | 836 |
| meteo. | Meteorologia / Meteorology | 38 | 225 |
| micol. | Micologia / Mycology | 5 | 114 |
| mil. | Arte militare / Military | 57 | 407 |
| mineral. | Mineralogia / Mineralogy | 19 | 152 |
| miniera | Miniera / Mining & Drilling | 3 | 113 |
| mitol. | Mitologia / Mythology | 66 | 512 |
| mobili | Mobili / Furniture | 18 | 232 |
| mus. | Musica / Music | 137 | 1739 |
| naut. | Nautica / Nautical Science | 63 | 218 |
| neol. | Neologismo / Neologisms | 2 | 194 |
| nucl. | Ingegneria Nucleare / Nuclear Engineering | 1 | 181 |
| odonto | Odontoiatria / Dental Medicine | 16 | 131 |
| onomast. | Onomastica / Names of Persons | 7 | 220 |
| orn. | Ornitologia / Ornithology | 377 | 149 |
| orol. | Orologi / Watches, Clocks | 8 | 206 |
| ortic. | Orticoltura / Horticulture | 2 | 248 |
| ottica | Ottica / Optics | 5 | 173 |
| pol. | Politica / Politics | 110 | 991 |
| prof. | Professione / Jobs, Employment Market | 139 | 585 |
| prov. | Proverbio / Proverb | 15 | 618 |
| psic. | Psicologia / Psychology | 45 | 914 |
| RadioTV | Televisione e radio / Radio and Television | 3 | 559 |
| relig. | Religione / Religion | 146 | 689 |
| retor. | Retorica / Rhetoric | 5 | 407 |
| scienza | Scienza / Academic Disciplines | 117 | 1606 |
| selv. | Selvicoltura / Forestry | 13 | 173 |
| SocFuoc. | Servizio di soccorso e protezione antincendio / Firefighting & Rescue | 6 | 132 |
| sociol. | Sociologia / Sociology | 25 | 542 |
| spec. | Di linguaggio speciale / Specialized Term | 5 | 361 |
| sport | Sport / Sports | 119 | 959 |
| stat. | Statistica / Statistics | 9 | 345 |
| stor. | Storia / History | 60 | 1331 |
| stupef. | Stupefacenti / Drugs | 5 | 267 |
| T | T / Taxonomic terms for animals, plants and fungi (incl. varieties and breeds) | 981 | 6 |
| teatro | Teatro / Theatre | 35 | 501 |
| tec. | Tecnica / Technology | 89 | 1245 |
| TecMed. | Tecnologia Medica / Medical Engineering & Imaging | 6 | 252 |
| telecom. | Telecomunicazione / Telecommunications | 11 | 541 |
| tessili | Tessili, Industria tessile / Textiles, Textile Industry | 10 | 158 |
| tip. | Tipografia / Print, Typography, Layout | 4 | 278 |
| TM | Marchi Registrati [©™®] / Trademarks, Brand Names | 1 | 105 |
| traff. | Traffico / Traffic | 59 | 321 |
| trasp. | Trasporti (trasporto via terra) / Transportation (Land Transport) | 2 | 337 |
| treno | Treno / Rail | 9 | 219 |
| turismo | Turismo / Travel Industry | 22 | 535 |
| unità | Unità di misura / Units, Measures, Weights | 16 | 430 |
| urban. | Urbanistica / Urban Planning | 11 | 229 |
| valuta | Valuta / Currencies | 2 | 262 |
| vest. | Vestiti e moda / Clothing, Fashion | 62 | 459 |
| VetMed. | Medicina Veterinaria / Veterinary Medicine | 1 | 170 |
| VocVia. | Vocabolario di viaggio / Travellers vocabulary | 4 | 697 |
| zool. | Zoologia / Zoology, Animals | 488 | 666 |
