Second-string and Second-banana

Second-string adjective - Being a replacement or substitute for a regular member of a team.

Second-banana and second-string are semantically related in importance topic. In some cases you can use "Second-banana" instead an adjective phrase "Second-string".

Second-string and second-banana are semantically related in importance topic. Sometimes you can use "Second-string" instead an adjective phrase "Second-banana".