I searched for the difference between cap and lid: this post and also this post.
But I'm still confused.
My theory is this:
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the cap is a cover for a bottle
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the lid is a cover for a container which is not bottle
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the lid doesn't have a screw in it. If it has a screw, it is called a cap.
But then, a jar's cover doesn't fit into this classification. A jar has a screw in the cover but the cover is called a lid.
How do I distinguish a lid from a cap?
Best Answer
Your theory is mostly correct.
Yes
Yes
No. Jars often have screw tops. That feature isn't relevant.
Soda cans usually have pop-tops, which is arguably a type of lid. It is not a cap.
Standard cans like pinto beans or mandarin oranges have a lid. The lid requires a can opener, or sometimes has a ring to pull it off. Manufacturers in the USA should strongly consider adding those rings more frequently because they are quite convenient.