possessive pronouns and adjectives
"that's
my teddy bear!"
"No! it's mine!"
possessive adjectices: my, your, her, his, their, our, etc.
it's my bike, that's your pen, this is our project
possessive pronouns: mine, yours, theirs, ours, his, hers, etc.
That's mine! This is yours! No, it's ours! I think it's hers