Meld
Part of speech: verb
Definition: to combine two similar objects into one
Melt
Part of speech: noun
Definition: molten material, the product of melting.The transition of matter from a solid state to a liquid stateThe springtime snow runoff in mountain regions.A melt sandwich.
Part of speech: verb
Definition: To transit (or to change) the matter from a solid state to a liquid state, usually by a gradual heat.To change gradually (or to become transited) from a solid state to a liquid state; to be meltedTo dissolve, disperse, vanish.To be very hot and sweat profusely.
Example sentence: When I reached the summit of Everest, I scooped some ice into my drinking bottle as I'd run out of water and hoped it would melt. After I got back to base camp, I decided to keep it, so I had a special bottle made with an inscription - it's my lucky water.