thalidomide vs teratogen

thalidomide and teratogen both are nouns.

Word	Noun	Adjective	Verb	Adverb
thalidomide	Yes	No	No	No
teratogen	Yes	No	No	No

As nouns, teratogen is a hypernym of thalidomide; that is, teratogen is a word with a broader meaning than thalidomide:

thalidomide: a sedative and hypnotic drug; withdrawn from sale after discovered to cause severe birth defects because it inhibits angiogenesis
teratogen: any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples

Other hypernyms of thalidomide include sedative-hypnotic, sedative-hypnotic drug.

thalidomide (noun)	teratogen (noun)
a sedative and hypnotic drug; withdrawn from sale after discovered to cause severe birth defects because it inhibits angiogenesis	any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples