engagement vs impinging

engagement and impinging both are nouns.

Word	Noun	Adjective	Verb	Adverb
engagement	Yes	No	No	No
impinging	Yes	No	No	No

As nouns, impinging is a hypernym of engagement; that is, impinging is a word with a broader meaning than engagement:

Other hypernyms of engagement include contact, striking.

engagement (noun)	impinging (noun)
the act of sharing in the activities of a group	the physical coming together of two or more things
a hostile meeting of opposing military forces in the course of a war
the act of giving someone a job
employment for performers or performing groups that lasts for a limited period of time
a mutual promise to marry
contact by fitting together
a meeting arranged in advance