biosystematy vs systematics

biosystematy and systematics both are nouns.

Word	Noun	Adjective	Verb	Adverb
biosystematy	Yes	No	No	No
systematics	Yes	No	No	No

As nouns, systematics is a hypernym of biosystematy; that is, systematics is a word with a broader meaning than biosystematy:

biosystematy: use of data (e.g. cytogenetic or biochemical) to assess taxonomic relations especially within an evolutionary framework
systematics: the science of systematic classification

biosystematy (noun)	systematics (noun)
use of data (e.g. cytogenetic or biochemical) to assess taxonomic relations especially within an evolutionary framework	the science of systematic classification