el compañero Englisch:

Tim is my classmate and we sit at the same desk.

She's my classmate.

Did you recognize your old classmate?

I ran across an old classmate on my way here.

Some of my classmate always make a fool of me.

Today, my classmate saw you guys shopping at Auchan.

He’s a classmate of mine – we take maths

You should practice English with a friend or classmate. Maybe you could join an Internet forum or a language club.

Anastazja is the classmate of Ania.

I saw my old classmate last week. She's as boring as ever.

John is my best classmate, he's always so cheerful

My classmates buy me a lovely birthday present every year.

Derek is in a new school and he doesn’t know his new classmates.

The two classmates maintained their friendship for the next forty years.

Not all my classmate like the food in the cafeteria.

He's my buddy!

If you buddy up to everybody and anybody, pretty soon people will think you're just a people-pleaser.

Martensson and his buddy

be their buddy

The "buddy system" is a way to stay safe while hiking in the woods, except when encountering pregnant bears, which eat for two or even three or four.