cymbal / symbol are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
cymbal: (noun) a percussion instrument consisting of a concave brass disk; makes a loud crashing sound when hit with a drumstick or when two are struck together.
symbol: (noun) an arbitrary sign (written or printed) that has acquired a conventional significance. (noun) something visible that by association or convention represents something else that is invisible.
cymbal: s·IH·m·b·ah·l
symbol: s·IH·m·b·ah·l
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)