ward off vs fend off

ward off and fend off both are verbs.

Word	Noun	Adjective	Verb	Adverb
ward off	No	No	Yes	No
fend off	No	No	Yes	No

As verbs, ward off and fend off are synonyms defined as:

ward off and fend off: prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off

Other synonyms of ward off include avert, avoid, debar, deflect, forefend, forfend, head off, obviate, stave off.

ward off (verb)	fend off (verb)
avert, turn away, or repel	prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off
prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off