Minus and Second string

Minus adjective - On the negative side or lower end of a scale.

Second string and minus are semantically related. In some cases you can replace phrase "Second string" with "Minus", this terms are similar.

Second string noun - A squad of players that are available either individually or as a team to relieve or replace the players who started the game.

Minus and second string are semantically related. Sometimes you can use "Minus" instead an adjective phrase "Second string".