fend vs fight back

fend and fight back both are verbs.

Word	Noun	Adjective	Verb	Adverb
fend	No	No	Yes	No
fight back	No	No	Yes	No

As verbs, fight back is a hypernym of fend; that is, fight back is a word with a broader meaning than fend:

Other hypernyms of fend include defend, fight, fight down, oppose.

fend (verb)	fight back (verb)
withstand the force of something	fight against or resist strongly
try to manage without help	defend oneself