push back vs offense

push back and offense both are nouns.

Word	Noun	Adjective	Verb	Adverb
push back	Yes	No	Yes	No
offense	Yes	No	No	No

As nouns, offense is a hypernym of push back; that is, offense is a word with a broader meaning than push back:

Other hypernyms of push back include offence, offensive.

push back (noun)	offense (noun)
the act of forcing the enemy to withdraw	the action of attacking an enemy
	a transgression that constitutes a violation of what is judged to be right
	a lack of politeness; a failure to show regard for others; wounding the feelings of others
	a feeling of anger caused by being offended
	the team that has the ball (or puck) and is trying to score

push back (verb)	offense (verb)
cause to move back by force or influence