is a specific kind of: opinion, view.

is a broader term that covers: divination.

derivation: guess, imagine, opine, reckon, suppose, think | conjecture, hypothecate, hypothesise, hypothesize, speculate, suppose, theorise, theorize | approximate, estimate, gauge, guess, judge | surmise | guess, hazard, pretend, venture | say, suppose | surmise, suspect | speculate | conjectural, divinatory, hypothetic, hypothetical, supposed, suppositional, suppositious, supposititious.