A noun can name a persona, place, thing or idea → Federico is a singer
A pronoun has the function of replacing a noun → Alice listens to music while she’s cooking
Adjectives describe nouns or pronouns → My labrador is black
Verbs describe an action or a state → I’m going out to some friends; I stay at home
Adverbs describe verbs, adjectives or other adverbs → I never learn to ski
Conjunctions are used to connect words, phrases or sentences → I don’t know which t-shirt to buy: the red one or the blue one
Prepositions show a relationship of place, time or location between nouns and pronouns and the rest of a sentence → I always have breakfast in the morning