tea parlour vs tea parlor

tea parlour and tea parlor both are nouns.

Word	Noun	Adjective	Verb	Adverb
tea parlour	Yes	No	No	No
tea parlor	Yes	No	No	No

As nouns, tea parlour and tea parlor are synonyms defined as:

tea parlour and tea parlor: a restaurant where tea and light meals are available

Other synonyms of tea parlour include teahouse, tearoom, teashop.

tea parlour (noun)	tea parlor (noun)
a restaurant where tea and light meals are available	a restaurant where tea and light meals are available