toilet vs tough luck

toilet and tough luck both are nouns.

Word	Noun	Adjective	Verb	Adverb
toilet	Yes	No	No	No
tough luck	Yes	No	No	No

As nouns, tough luck is a hypernym of toilet; that is, tough luck is a word with a broader meaning than toilet:

Other hypernyms of toilet include bad luck, ill luck, misfortune.

toilet (noun)	tough luck (noun)
the act of dressing and preparing yourself	an unfortunate state resulting from unfavorable outcomes
a room or building equipped with one or more toilets
a plumbing fixture for defecation and urination
misfortune resulting in lost effort or money