Difference between Greaseproof and Impervious

Greaseproof

Part of speech: adjective

Definition: Resistant to grease.

Part of speech: verb

Definition: To make resistant to grease.

Impervious

Part of speech: adjective

Definition: unaffected or unable to be affected bypreventative of any penetration; impenetrable, impermeableimmune to damage or effect

Example sentence: Fear comes from uncertainty. When we are absolutely certain, whether of our worth or worthlessness, we are almost impervious to fear.