Adjectives are words that describe people and things. You can use the verb ser with adjectives to describe what someone is like.
Nouns in Spanish are divided into genders: masculine and femenine
Adjectives describe nouns. They have different forms to match or agree with the noun.
The masculine form of most adjectives ends in -o
while the femenine form ends in -a
Adjectives also agree with nouns in number.
If the adjective is describing a plural noun, then you need to make the adjective plural as well.