basis
definition: the fundamental assumptions from which something is begun or developed or calculated or explained
example: the whole argument rested on a basis of conjecture
speech part: noun
synonyms:
foundation
definition: a relation that provides the foundation for something
example:
speech part: noun
synonyms:
ground
definition: the most important or necessary part of something
example: the basis of this drink is orange juice
speech part: noun
synonyms:
base