taper vs rush candle

taper and rush candle both are nouns.

Word	Noun	Adjective	Verb	Adverb
taper	Yes	No	Yes	No
rush candle	Yes	No	No	No

As nouns, rush candle is a hyponym of taper; that is, rush candle is a word with a more specific, narrower meaning than taper:

Other hyponyms of taper include chandlery, dip, rushlight, vigil candle, vigil light.

taper (noun)	rush candle (noun)
stick of wax with a wick in the middle	a tallow candle with a rush stem as the wick
a loosely woven cord (in a candle or oil lamp) that draws fuel by capillary action up into the flame
the property possessed by a shape that narrows toward a point (as a wedge or cone)
a convex shape that narrows toward a point

taper (verb)	rush candle (verb)
give a point to
diminish gradually