biocatalyst vs accelerator

biocatalyst and accelerator both are nouns.

Word	Noun	Adjective	Verb	Adverb
biocatalyst	Yes	No	No	No
accelerator	Yes	No	No	No

As nouns, accelerator is a hypernym of biocatalyst; that is, accelerator is a word with a broader meaning than biocatalyst:

biocatalyst: a biochemical catalyst such as an enzyme
accelerator: (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected

Other hypernyms of biocatalyst include catalyst.

biocatalyst (noun)	accelerator (noun)
a biochemical catalyst such as an enzyme	a valve that regulates the supply of fuel to the engine
	a scientific instrument that increases the kinetic energy of charged particles
	a pedal that controls the throttle valve
	(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected