solution

[1]	solving , working/figuring out , discovery , finding out , unravelling , explication , deciphering , decipherment , elucidation , revelation , clarification , explanation , answer , key
[2]	settlement , answer , result , settling , resolution , resolution , solvent , result , denouement/d , nouement , outcome , conclusion
[3]	mixture , blend , compound , infusion , liquid , fluid , (Technical) emulsion , suspension , colloid/colloidal solution/colloidal suspension
[4]	dissolving , root , dissolution , mixing , mixture