semasiology vs semantics

semasiology and semantics both are nouns.

Word	Noun	Adjective	Verb	Adverb
semasiology	Yes	No	No	No
semantics	Yes	No	No	No

As nouns, semantics is a hypernym of semasiology; that is, semantics is a word with a broader meaning than semasiology:

semasiology: the branch of semantics that studies the cognitive aspects of meaning
semantics: the study of language meaning

semasiology (noun)	semantics (noun)
the branch of semantics that studies the cognitive aspects of meaning	the study of language meaning
	the meaning of a word, phrase, sentence, or text