examiner vs scrutiniser

examiner and scrutiniser both are nouns.

Word	Noun	Adjective	Verb	Adverb
examiner	Yes	No	No	No
scrutiniser	Yes	No	No	No

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

Other hyponyms of examiner include bank examiner, checker, scrutinizer, canvasser, scrutineer.

examiner (noun)	scrutiniser (noun)
an investigator who observes carefully	a careful examiner; someone who inspects with great care
someone who administers a test to determine your qualifications