beholder vs discoverer

beholder and discoverer both are nouns.

Word	Noun	Adjective	Verb	Adverb
beholder	Yes	No	No	No
discoverer	Yes	No	No	No

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

beholder: a person who becomes aware (of things or events) through the senses
discoverer: someone who is the first to observe something

beholder (noun)	discoverer (noun)
a person who becomes aware (of things or events) through the senses	someone who is the first to observe something
	someone who is the first to think of or make something