testify vs abduce

testify and abduce both are verbs.

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

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

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

testify (verb)	abduce (verb)
give testimony in a court of law	advance evidence for
provide evidence for