bump vs impinge on

bump is a noun but impinge on is not a noun.

Word	Noun	Adjective	Verb	Adverb
bump	Yes	No	Yes	No
impinge on	No	No	Yes	No

As verbs, impinge on is a hypernym of bump; that is, impinge on is a word with a broader meaning than bump:

Other hypernyms of bump include collide with, hit, run into, strike.

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

bump (verb)	impinge on (verb)
knock against with force or violence	hit against; come into sudden contact with
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