Concordanza nome-aggettivo

Adjective-noun agreement
Nuova, carina, belle, comode are adjectives. Adjectives are words that provide additional information or description about a noun, letting you know the size, shape, weight, color, nationality or any other qualities.

Adjectives in Italian always agree in gender and number with the nouns they refer to.
They are typically placed after nouns, though this isn't always the case.

There are two main types of adjectives, as listed in the dictionary: those ending in -o and those ending in -e in their default form (masculine singular).

Examples:
To recap, the pattern of Italian adjectives is:
When an adjective modifies two or more nouns of different gender, it keeps its masculine ending:
EXERCISES

Questo & quello

This & that
Questo means "this". It refers to something or someone that is close to the speaker.
Quello means "that" and refers to something or someone that is far from the speaker.

Questo and quello must agree with the noun they refer to and therefore have four forms each:
Examples:
EXERCISE
EXERCISES