Answer:
cov·e·nant
/ˈkəvənənt/
noun
1.
an agreement:
"there was a covenant between them that her name was never to be mentioned"
verb
1.
agree by lease, deed, or other legal contract:
"the landlord covenants to repair the property"
Step-by-step explanation:
so the answer is: an agreement or agree by lease, deed, or other legal contract.