pact vs peace

pact and peace both are nouns.

Word	Noun	Adjective	Verb	Adverb
pact	Yes	No	No	No
peace	Yes	No	No	No

As nouns, peace is a hyponym of pact; that is, peace is a word with a more specific, narrower meaning than pact:

Other hyponyms of pact include alliance, commercial treaty, pacification, peace treaty, convention.

pact (noun)	peace (noun)
a written agreement between two states or sovereigns	a treaty to cease hostilities
	the absence of mental stress or anxiety
	the state prevailing during the absence of war
	harmonious relations; freedom from disputes
	the general security of public places