Christmastime vs Christmastide

Christmastime and Christmastide both are nouns.

Word	Noun	Adjective	Verb	Adverb
Christmastime	Yes	No	No	No
Christmastide	Yes	No	No	No

As nouns, Christmastime and Christmastide are synonyms defined as:

Christmastime and Christmastide: period extending from Dec. 24 to Jan. 6

Other synonyms of Christmastime include Christmas, Noel, Yule, Yuletide.

Christmastime (noun)	Christmastide (noun)
period extending from Dec. 24 to Jan. 6	period extending from Dec. 24 to Jan. 6