Difference between Says and Suppose

SAYS vs SUPPOSE: NOUN

Express a supposition
Require as a necessary antecedent or precondition
Take for granted or as a given; suppose beforehand
Expect, believe, or suppose
To believe especially on uncertain or tentative grounds
To theorize or hypothesize.
To take for granted; to conclude, with less than absolute supporting data; to believe.

To require to exist or to be true; to imply by the laws of thought or of nature.
To put by fraud in the place of another.
To imagine; to believe; to receive as true.
To represent to one's self, or state to another, not as true or real, but as if so, and with a view to some consequence or application which the reality would involve or admit of; to imagine or admit to exist, for the sake of argument or illustration; to assume to be true; as, let us suppose the earth to be the center of the system, what would be the result?

Suppose beforehand
Take for granted or as a given
To infer hypothetically; conceive a state of things, and dwell upon the idea (at least for a moment) with an inclination to believe it true, due to the agreement of its consequences with observed fact, but not free from doubt.
To make a hypothesis; formulate a proposition without reference to its being true or false, with a view of tracing out its consequences.
To assume as true without reflection; presume; opine; believe.
To imply; involve as a further proposition or consequence; proceed from, as from a hypothesis.
To make or form a supposition; think; imagine.
To put, as one thing by fraud in the place of another.

Believes, Explains, Thinks, Order, Enounce, Enjoin, Enunciate, Articulate, State, Read, Pronounce, Aver, Allege, Suppose, Tell

Pretend, Daresay, Presume, Maybe, Hypothecate, Theorise, Speculate, Theorize, Conjecture, Hypothesize, Say, Imagine, Reckon, Think, Guess

Notes, Discusses, Denies, Does, Emphasizes, Stated, Noted, Insists, Order, Enjoin, Articulate, State, Read, Suppose, Tell

Infer, Guessing, Feel, Believe, Pretend, Presume, Maybe, Theorise, Speculate, Conjecture, Say, Imagine, Reckon, Think, Guess

Republican platform says it wants to reverse Obergefell.
It says we do not reach the issue.
Walter says they will no longer accept coupons.
Jesus says this is what success looks like.
Report Says Oil Agency Ran Amok: Interior Dept.
He expects us to move when He says move and to stop when He says stop.
It says nothing about natural; it says nothing about organic.
Matthew says he was Jacob, while Luke says he was Heli.
HOA in place that says, hey, although the state allows it, this HOA says you cannot do it.
Guided reading says to go easy, and common core says challenge them.

Suppose your organization also values low cost suppliers.
Yes, men need to eat too, I suppose.
How am i suppose to do business then.
Suppose I have taken a loan of Rs.
These men are not drunk, as you suppose.
Suppose you were in a minor car accident.
That, I suppose, makes everything quite all right.
Suppose this proportion is valid for all homes.
It is not suppose to be easy for the waiter, it is suppose to be easy for the guest, in this case me!
Suppose, just suppose, we had a machine that could transfer the life out of one person and into the other.