Which type of nouns name things that you can physically see, such as an animal, a person, or a tree? ?

Laugh and be merry, remember, better the world with a song,    better the world with a blow in the teeth of a wrong.    laugh, for the time is brief, a thread the length of a span.    laugh and be proud to belong to the old proud pageant of man. (laugh and be merry/john masefield/public domain) which of these is the main idea of the poem?

I’ve given a lot of thought to what one of them should be, and the answer seems clear.

The room was gaudy with its leather couch and purple walls