bubble

BUBBLE noun

[ C ] uk/ˈbʌbl/ us
a ball of air or gas with liquid around it

пузырь
an air bubble
bubble verb [ I ] uk/ˈbʌbl/ us
If a liquid bubble s, balls of air or gas rise to its surface.

кипеть
The soup was bubbling on the stove.  bubble (over) with confidence/enthusiasm, etc
to be full of a positive emotion or quality

быть переполненным самоуверенностью/энтузиазмом и т. д.