All keystones synonyms

noun keystones

• bases — Bases is the plural of base.
• underpinnings — a system of supports beneath a wall or the like.
• roots — a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture.
• sources — any thing or place from which something comes, arises, or is obtained; origin: Which foods are sources of calcium?
• foundations — Plural form of foundation.
• principles — an accepted or professed rule of action or conduct: a person of good moral principles.
• cornerstones — Plural form of cornerstone.
• crowns — Plural form of crown.
• headstones — Plural form of headstone.