bump vs bash

bump and bash both are nouns.

Word	Noun	Adjective	Verb	Adverb
bump	Yes	No	Yes	No
bash	Yes	No	Yes	No

As nouns, bash is a hyponym of bump; that is, bash is a word with a more specific, narrower meaning than bump:

bump (noun)	bash (noun)
an impact (as from a collision)	a vigorous blow
something that bulges out or is protuberant or projects from its surroundings	an uproarious party
a lump on the body caused by a blow

bump (verb)	bash (verb)
knock against with force or violence	hit hard
remove or force from a position of dwelling previously occupied
to play music at loud volume
to enjoy some music greatly
dance erotically or dance with the pelvis thrust forward
come upon, as if by accident; meet with
assign to a lower position; reduce in rank