forfend vs preclude

forfend and preclude both are verbs.

Word	Noun	Adjective	Verb	Adverb
forfend	No	No	Yes	No
preclude	No	No	Yes	No

As verbs, preclude is a hypernym of forfend; that is, preclude is a word with a broader meaning than forfend:

forfend: prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off
preclude: keep from happening or arising; make impossible

Other hypernyms of forfend include forbid, foreclose, forestall, prevent.

forfend (verb)	preclude (verb)
prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off	keep from happening or arising; make impossible
	make impossible, especially beforehand