congelar
freeze
congeal
to solidify, especially by cooling
+
-ar
verb suffix
Congelar means to freeze and can be thought of as congeal0 (to solidify, especially by cooling0) + -ar1 (verb suffix1), as freezing involves solidification through cooling.
verb
  1. freeze
    To freeze or turn into ice
    Vamos a congelar la sopa para conservarla. // We're going to freeze the soup to preserve it.
  2. freeze
    To suspend or halt a process or activity
    El gobierno decidió congelar los salarios este año. // The government decided to freeze salaries this year.