swear vs rely

swear and rely both are verbs.

Word	Noun	Adjective	Verb	Adverb
swear	No	No	Yes	No
rely	No	No	Yes	No

As verbs, swear and rely are synonyms defined as:

Other synonyms of swear include bank, bet, calculate, count, depend, look, reckon.

swear (verb)	rely (verb)
have faith or confidence in	have faith or confidence in
make a deposition; declare under oath
utter obscenities or profanities
promise solemnly; take an oath
to declare or affirm solemnly and formally as true