What is the difference between Symbol and Sign?

Question:

What is the difference between Symbol and Sign?

in art specially in ARCHITECTURE?

Additional Details

6 months ago
please provide examples

Best Answer - Chosen by Asker:

1. symbol, symbolization, symbolisation, symbolic representation:
something visible that by association or convention represents something else that is invisible; "the eagle is a symbol of the United States"

2. an arbitrary sign (written or printed) that has acquired a conventional significance

So asymbol is a sign, but all signs are not symbols.