substitution

Từ điển Oxford Advanced Learner 8th

sub·sti·tu·tion [substitution substitutions] BrE [ˌsʌbstɪˈtjuːʃn] ; NAmE [ˈsʌbstɪˈtuːʃn] noun uncountable, countable
•the substitution of low-fat spreads for butter
•Two substitutions were made during the game.
Main entry: ↑substitute_derived

• Từ đồng nghĩa / Synonyms:
  exchange, commutation, permutation, transposition, replacement, switch