xrasni lujvo

x1 is a (visual) symbol/icon/logo representing x2

Refers to the abstract form or idea of a symbol. To refer to a specific instance of a symbol at a given time and space, see snixra

In notes:

klusni
x1 is a cultural symbol/icon/emblem/meme representing x2 (ka/si'o) to people x3 (loi/lo'e)
snixra
x1 is an emblem/token/icon depicting x2