Which Is Which

Half-truths are half lies.
Who knows which is which?
This demands assize.
Who knows kitsch from rich?
This becomes disguise.
Who knows witch from snitch?
This exceeds queen-size.
Who knows switch from glitch?
This leads to surmise.
Who knows stitch from hitch?
This displays surprise.
Who knows ditch from niche?
This gives a door prize.
Who knows flitch from fitch?
This can be demise.
Who knows twitch from itch?
This echoes reprise.
Who knows which is which?
Half-truths are half lies.