epoch vs day

epoch and day both are nouns.

Word	Noun	Adjective	Verb	Adverb
epoch	Yes	No	No	No
day	Yes	No	No	No

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

epoch: a period marked by distinctive character or reckoned from a fixed point or event
day: an era of existence or influence

Other hyponyms of epoch include age, historic period, modern era.

epoch (noun)	day (noun)
a period marked by distinctive character or reckoned from a fixed point or event	a period of opportunity
a unit of geological time that is a subdivision of a period and is itself divided into ages	time for Earth to make a complete rotation on its axis
(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded	a day assigned to a particular purpose or observance
	the time after sunrise and before sunset while it is light outside
	a point or period in time
	the recurring hours when you are not sleeping (especially those when you are working)
	an era of existence or influence
	the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
	the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis

Difference between epoch and day

Words related to "day"

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