If no one asks, you don't dance. The offer cannot be lacking, or no contract exists. An offer is an expression or manifestation of interest beyond mere negotiation. For the contractual parties, it's the first step to the waltz floor. The person who makes the offer is called the offeror.
Examples are the mortgagor, vendor, seller, insurer, etc.
The offer itself must be of a definite nature. It can't be vague, or for that matter, vaguely communicated. It is given to the offeree. Think of the mortgagee, vendee, sellee, lnsuree, etc. Of course, even the offeror cannot escape the cold clutches of death or insanity.