ogre vs monster

ogre and monster both are nouns.

Word	Noun	Adjective	Verb	Adverb
ogre	Yes	No	No	No
monster	Yes	No	No	No

As nouns, ogre and monster are synonyms defined as:

Other synonyms of ogre include demon, devil, fiend.

ogre (noun)	monster (noun)
(folklore) a giant who likes to eat human beings	(medicine) a grossly malformed and usually nonviable fetus
a cruel wicked and inhuman person	a cruel wicked and inhuman person
	a person or animal that is markedly unusual or deformed
	an imaginary creature usually having various human and animal parts
	someone that is abnormally large and powerful