teras vs monster

teras and monster both are nouns.

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

As nouns, teras and monster are synonyms defined as:

teras and monster: (medicine) a grossly malformed and usually nonviable fetus

teras (noun)	monster (noun)
(medicine) a grossly malformed and usually nonviable fetus	(medicine) a grossly malformed and usually nonviable fetus
	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