freshen vs ventilate

freshen and ventilate both are verbs.

Word	Noun	Adjective	Verb	Adverb
freshen	No	No	Yes	No
ventilate	No	No	Yes	No

As verbs, ventilate is a hyponym of freshen; that is, ventilate is a word with a more specific, narrower meaning than freshen:

Other hyponyms of freshen include air, air out, vent.

freshen (verb)	ventilate (verb)
make fresh again	expose to cool or cold air so as to cool or freshen
become or make oneself fresh again	furnish with an opening to allow air to circulate or gas to escape
make (to feel) fresh	give expression or utterance to
	circulate through and freshen
	expose to the circulation of fresh air so as to retard spoilage