forefend vs head off

forefend and head off both are verbs.

Word	Noun	Adjective	Verb	Adverb
forefend	No	No	Yes	No
head off	No	No	Yes	No

As verbs, forefend and head off are synonyms defined as:

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

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

forefend (verb)	head off (verb)
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