This is the 7182nd most frequent French word.
mort
"Mort" means "death" or "dead" in English.
In this sentence, 'mort' is used as a past participle (of the verb 'mourir') describing the action of having passed away.
Il est mort après une longue maladie.
He died after a long illness.
Here, 'mort' is used as a noun representing the concept of death itself.
La mort fait partie de la vie.
Death is part of life.
In this example, 'morte' is an adjective agreeing with the feminine subject 'plante,' indicating it is no longer alive.