Adjuvant and Second string

Adjuvant adjective - Furnishing added support.

Second string and adjuvant are semantically related. In some cases you can replace phrase "Second string" with "Adjuvant", 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.

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