crepuscule

As nouns the difference between crepuscule and gloam

is that crepuscule is twilight, dusk (the time of the day when the sun sets) while gloam is (obsolete) gloaming, twilight.

As a verb gloam is

to begin to grow dark; to grow dusky.

Dawn is a synonym of crepuscule.

As nouns the difference between crepuscule and dawn

is that crepuscule is twilight while dawn is the morning twilight period immediately before sunrise.

As a verb dawn is

to begin to brighten with daylight.

As a proper noun Dawn is

{{given name|female|from=English}} sometimes given to a girl born at that time of day.

As nouns the difference between crepuscule and aurora

is that crepuscule is twilight while aurora is an atmospheric phenomenon created by charged particles from the sun striking the upper atmosphere, creating coloured lights in the sky. It is usually named australis or borealis based on whether it is in the southern or northern hemispheres respectively.

As a proper noun Aurora is

roman goddess of the dawn; equivalent of the Greek Eos. Sister of Luna and Sol.

As nouns the difference between taxonomy and crepuscule

is that taxonomy is the science or the technique used to make a classification while crepuscule is twilight, dusk (the time of the day when the sun sets).