froth
noun
°foam.
°unimportant events or actions; drivel.
"Thousands of African children die each day: why do the newspapers continue to discuss unnecessary showbiz froth?"
verb
°To create froth.
"I like to froth my coffee for ten seconds exactly, no more, no less."
°To bubble.
"The chemical frothed up when I added the acid, just as I thought it would."