Is newcomer or Comer new?

It's simply a combination of the adjective new and the noun comer, which is also used in the word latecomer (someone who arrives late) and in phrases like take on all comers (meaning “to take on anyone who shows up”). Newcomer is typically applied to a person who has just arrived or is new on the scene.

Is newcomers a compound word?

1 Answer. When I searched "a newcomers" (no apostrophe) newcomers was always being used as part of compound noun, eg. "a newcomers guide" = "a guide for newcomers". Therefore the "a" is appropriate because it can refer to a singular noun, that is being described as for newcomers.