Specifically, it is the way to spell a chronically misused word. A word that means beliefs, principles, doctrines or creeds.
Let me repeat.
Is the word you use when you are talking about what someone believes.
…is the word you use when you’re talking about a place someone lives because when they live there, they are a tenant.
A person is not a tenet. A belief or principle is not a tenant, unless, of course, you’re trying to make a poetic statement about the place it holds in someone’s mind or heart.
End of lessen in English 101. Carry on.