valency vs power

valency and power both are nouns.

Word	Noun	Adjective	Verb	Adverb
valency	Yes	No	No	No
power	Yes	No	Yes	No

As nouns, power is a hypernym of valency; that is, power is a word with a broader meaning than valency:

valency: (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)
power: possession of controlling influence

Other hypernyms of valency include powerfulness.

As nouns, power is a hypernym of valency; that is, power is a word with a broader meaning than valency:

valency: (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate
power: possession of controlling influence

Other hypernyms of valency include powerfulness.

valency (noun)	power (noun)
(chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)	possession of controlling influence
(biology) a relative capacity to unite or react or interact as with antigens or a biological substrate	physical strength
the phenomenon of forming chemical bonds	possession of the qualities (especially mental qualities) required to do something or get something done
	a mathematical notation indicating the number of times a quantity is multiplied by itself
	a state powerful enough to influence events throughout the world
	one possessing or exercising power or influence or authority
	a very wealthy or powerful businessman
	(physics) the rate of doing work; measured in watts (= joules/second)
	energy made available by the flow of electric charge through a conductor
	(of a government or government official) holding an office means being in power

valency (verb)	power (verb)
	supply the force or power for the functioning of