solid figure vs three-dimensional figure

solid figure and three-dimensional figure both are nouns.

Word	Noun	Adjective	Verb	Adverb
solid figure	Yes	No	No	No
three-dimensional figure	Yes	No	No	No

As nouns, solid figure and three-dimensional figure are synonyms defined as:

solid figure and three-dimensional figure: a shape which may be described by three parameters or Cartesian geometry

solid figure (noun)	three-dimensional figure (noun)
a shape which may be described by three parameters or Cartesian geometry	a shape which may be described by three parameters or Cartesian geometry