Whitsuntide vs Whitweek

Whitsuntide and Whitweek both are nouns.

Word	Noun	Adjective	Verb	Adverb
Whitsuntide	Yes	No	No	No
Whitweek	Yes	No	No	No

As nouns, Whitsuntide and Whitweek are synonyms defined as:

Whitsuntide and Whitweek: Christian holiday; the week beginning on Whitsunday (especially the first 3 days)

Other synonyms of Whitsuntide include Whitsun.

Whitsuntide (noun)	Whitweek (noun)
Christian holiday; the week beginning on Whitsunday (especially the first 3 days)	Christian holiday; the week beginning on Whitsunday (especially the first 3 days)