Drink can be a verb or a noun.
used as a transitive verb
When you drink a liquid, you take it into your mouth and swallow it. The past tense of drink is drank.
You should drink water at every meal.
I drank some of my tea.
The -ed participle is drunk.
He was aware that he had drunk too much coffee.
used as an intransitive verb
If you use drink without an object, you are usually talking about drinking alcohol.
You shouldn't drink and drive.
If you say that someone drinks, you mean that they regularly drink too much alcohol.
Her mother drank, you know.
If you say that someone does not drink, you mean that they don't drink alcohol at all.
She doesn't smoke or drink.
used as a countable noun
A drink is an amount of liquid that you drink.
I asked her for a drink of water.
Lynne brought me a hot drink.
To have a drink means to spend some time, usually with other people, drinking alcoholic drinks.
I'm going to have a drink with some friends this evening.
Drinks usually refers to alcoholic drinks.
The drinks were served in the sitting room.
used as an uncountable noun
Drink is alcohol.
There was plenty of food and drink at the party.