beat up vs lambast

beat up and lambast both are verbs.

Word	Noun	Adjective	Verb	Adverb
beat up	No	No	Yes	No
lambast	No	No	Yes	No

As verbs, lambast is a hyponym of beat up; that is, lambast is a word with a more specific, narrower meaning than beat up:

beat up: give a beating to; subject to a beating, either as a punishment or as an act of aggression
lambast: beat with a cane

beat up (verb)	lambast (verb)
gather	censure severely or angrily
give a beating to; subject to a beating, either as a punishment or as an act of aggression	beat with a cane