testify vs presume

testify and presume both are verbs.

Word	Noun	Adjective	Verb	Adverb
testify	No	No	Yes	No
presume	No	No	Yes	No

As verbs, presume is a hyponym of testify; that is, presume is a word with a more specific, narrower meaning than testify:

Other hyponyms of testify include attest, certify, demonstrate, evidence, manifest, abduce, adduce, cite.

testify (verb)	presume (verb)
give testimony in a court of law	take liberties or act with too much confidence
provide evidence for	take to be the case or to be true; accept without verification or proof
	constitute reasonable evidence for
	take upon oneself; act presumptuously, without permission