calm|adjective|quiet; peaceful; opposite tense
exercise|verb|to perform physical activity in order to improve one&rsquo;s health
exercise|noun|an activity or effort for the purpose of improving the body or to stay in good health
laugh|verb|to make sounds with your voice because you think something is funny
real|adjective|not false; truly existing; true
serious|adjective|important; needing careful consideration; dangerous; without humor
