chemotaxis vs taxis

chemotaxis and taxis both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemotaxis	Yes	No	No	No
taxis	Yes	No	No	No

As nouns, taxis is a hypernym of chemotaxis; that is, taxis is a word with a broader meaning than chemotaxis:

chemotaxis: movement by a cell or organism in reaction to a chemical stimulus
taxis: a locomotor response toward or away from an external stimulus by a motile (and usually simple) organism

chemotaxis (noun)	taxis (noun)
movement by a cell or organism in reaction to a chemical stimulus	a locomotor response toward or away from an external stimulus by a motile (and usually simple) organism
	the surgical procedure of manually restoring a displaced body part