Her (determiner)
Belonging to her (belonging to that female, or in poetic or old-fashioned language that ship, city, season, etc).
“This is her book”
Her (pronoun)
The form of she used after a preposition or as the object of a verb; that woman, that ship, etc.
“Give it to her”
“He wrote her a letter”
“He treated her for a cold”
Her (noun)
A female person or animal.
“I think this bird is a him, but it may be a her.”
She (pronoun)
The female person or animal previously mentioned or implied.
“I asked Mary, but she said that she didn’t know.”
“After the cat killed a mouse, she left it on our doorstep.”
She (pronoun)
A ship or boat.
“She could do forty knots in good weather.”
“She is a beautiful boat, isn’t she?”
She (pronoun)
A country, or sometimes a city, province, planet, etc.
“She is a poor place, but has beautiful scenery and friendly people.”
She (pronoun)
Any machine or thing, such as a car, a computer, or (poetically) a season.
“She only gets thirty miles to the gallon on the highway, but she’s durable.”
She (pronoun)
A person whose gender is unknown or irrelevant used in a work, along with or in place of he, as an indefinite pronoun.
She (noun)
A female.
“Pat is definitely a she.”