Are names like Karl Marx compound nouns?

Answer 1

No, they aren't. Compound nouns are two nouns put together to make one, like "summertime" or "schoolteacher." Karl Marx is a Proper noun (a noun that is someone's name or the title of something, that needs to be capitalized).

Answer 2

Yes, the name "Karl Marx" is a compound noun made up of two separate words that come together to form a single entity, in this case, a person's name.