Lips vs. Lip: Understanding the Correct Plural Form

You're right! The plural form of "lip" is "lips," not "lip." This is because "lip" is a singular noun, referring to one of the two fleshy folds around the mouth.

The reason we use the plural form "lips" when referring to both of them is that they are typically considered as a pair, functioning together. It's like saying "eyes," "ears," "feet," or "hands" - they come in pairs, and we use the plural form.