zephyr vs current of air

zephyr and current of air both are nouns.

Word	Noun	Adjective	Verb	Adverb
zephyr	Yes	No	No	No
current of air	Yes	No	No	No

As nouns, current of air is a hypernym of zephyr; that is, current of air is a word with a broader meaning than zephyr:

zephyr: a slight wind (usually refreshing)
current of air: air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

Other hypernyms of zephyr include air current, wind.

zephyr (noun)	current of air (noun)
a slight wind (usually refreshing)	air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure