Hard and tough.
solid, cemented
Stiff, full, firm, solid.
stable, fixed, compact, hard, trustworthy
forceful, strong, solid, tough, cohesive, unyielding
i dont even know you little buttcheak
Powerful - sturdy - firm - robust - hard - solid - lusty.
Freezing and melting points are synonyms: at this temperature a solid become a liquid or a liquid become a solid.
Hard as in texture: Solid Hard as in difficult: Difficult, not easy.
Solid, strong, tough, dense, rigid, firm and compact
weighty, hefty, substantial, ponderous; solid, dense, leaden; burdensome
Monochromatic means to have a single color. Synonyms for monochromatic are monochrome, monochromic, and solid. Another meaning is boring. Synonyms for this meaning are colorless , drab, dullish, and undramatic.
They are synonyms.