three-dimensional figure vs solid figure

three-dimensional figure and solid figure both are nouns.

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

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

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

three-dimensional figure (noun)	solid 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