regular convex solid vs regular convex polyhedron

regular convex solid and regular convex polyhedron both are nouns.

Word	Noun	Adjective	Verb	Adverb
regular convex solid	Yes	No	No	No
regular convex polyhedron	Yes	No	No	No

As nouns, regular convex solid and regular convex polyhedron are synonyms defined as:

regular convex solid and regular convex polyhedron: any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent

Other synonyms of regular convex solid include ideal solid, Platonic body, Platonic solid, regular polyhedron.

regular convex solid (noun)	regular convex polyhedron (noun)
any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent	any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent