Actual

actual comes from the Latin word actus, "a doing", which is based on act- meaning "to do" and the Latin suffix -al which means "pertaining to; characterized by". Actual means "pertaining to something that is in action or in existence now"; thus, it means "existing; real"
What were his actual words?
Two words based on actual are actually, meaning "really" or "truly," and actuality, which means "reality; truth; fact."
What did he actually say?
Our dream of reaching the moon has become an actuality.

Vital

Vital is formed from the the Latin root vit- meaning "life" and the suffix -al meaning "pertaining to" or “full of”. Thus, vital means (1)pertaining to (0r necessary for) life; (2) full of life.
Oxygen is vital for all animals.
He is a happy, vital person.
Vital statistics relates to births, deaths, marriages, etc.