witness vs shahadah

witness and shahadah both are nouns.

Word	Noun	Adjective	Verb	Adverb
witness	Yes	No	Yes	No
shahadah	Yes	No	No	No

As nouns, shahadah is a hyponym of witness; that is, shahadah is a word with a more specific, narrower meaning than witness:

witness (noun)	shahadah (noun)
testimony by word or deed to your religious faith	the first pillar of Islam is an affirmation of faith
someone who sees an event and reports what happened
a close observer; someone who looks at something (such as an exhibition of some kind)
(law) a person who attests to the genuineness of a document or signature by adding their own signature
(law) a person who testifies under oath in a court of law

witness (verb)	shahadah (verb)
be a witness to
perceive or be contemporaneous with