@Frank Apisa,
Simplistic claptrap!
You are avoiding answering the question, because it is not in the interests of your self image to acknowledge that there is
a usage continuum from "guess" through "belief" to "knowledge" which is graded in terms of "degree of confidence".
In set theoretic terms, the set we call "guesses"
intersects the set we call "beliefs" which
intersects the set we call knowledge.
No set can be said to completely contain the other, and the boundaries of the intersection are always open to contextual variation involving negotiation of confidence levels.