spiral vs curved shape

spiral and curved shape both are nouns.

Word	Noun	Adjective	Verb	Adverb
spiral	Yes	Yes	Yes	No
curved shape	Yes	No	No	No

As nouns, curved shape is a hypernym of spiral; that is, curved shape is a word with a broader meaning than spiral:

spiral: a plane curve traced by a point circling about the center but at increasing distances from the center
curved shape: the trace of a point whose direction of motion changes

Other hypernyms of spiral include curve.

As nouns, curved shape is a hypernym of spiral; that is, curved shape is a word with a broader meaning than spiral:

spiral: a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle
curved shape: the trace of a point whose direction of motion changes

Other hypernyms of spiral include curve.

spiral (noun)	curved shape (noun)
flying downward in a helical path with a large radius	the trace of a point whose direction of motion changes
a structure consisting of something wound in a continuous series of loops
ornament consisting of a curve on a plane that winds around a center with an increasing distance from the center
a continuously accelerating change in the economy
a plane curve traced by a point circling about the center but at increasing distances from the center
a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle

spiral (adjective)	curved shape (adjective)
in the shape of a coil

spiral (verb)	curved shape (verb)
to wind or move in a spiral course
move in a spiral or zigzag course
form a spiral