Vary
/ˈvɛəɹi/
noun
Alteration; change.
verb
To change with time or a similar parameter.
“He varies his magic tricks so as to minimize the possibility that any given audience member will see the same trick twice.”
To institute a change in, from a current state; to modify.
“You should vary your diet. Eating just bread will do you harm in the end.”
Not to remain constant: to change with time or a similar parameter.
“His mood varies by the hour.”
Synonyms: dissent, take exception, alter, change, fluctuate