There is not much difference between shades and sunglasses. Shades and sunglasses can both be used to refer to sunglasses. Shades is an informal word for sunglasses.
Glare, glints are other words used in place of sunglasses.
Sunglasses as a noun is tinted glasses worn to protect the eyes from the sun. while Shades as a noun is darkness where light, particularly sunlight, is blocked.
Part of speech: noun
Definition: Tinted glasses worn to protect the eyes from the sun.
Part of speech: noun
Definition: Darkness where light, particularly sunlight, is blocked.sunglasses, sun-glasses
Part of speech: verb
Definition: To shield from light.
We hope you now know whether to use Sunglasses or Shades in your sentence.