shades vs reminder

shades and reminder both are nouns.

Word	Noun	Adjective	Verb	Adverb
shades	Yes	No	No	No
reminder	Yes	No	No	No

As nouns, reminder is a hypernym of shades; that is, reminder is a word with a broader meaning than shades:

shades (noun)	reminder (noun)
(plural) spectacles that are darkened or polarized to protect the eyes from the glare of the sun	an experience that causes you to remember something
(plural) something that reminds you of someone or something	a message that helps you remember something
	someone who gives a warning so that a mistake can be avoided