substructure

• substructure

substructure

Noun

the basic structure or features of a system or organization

Synonyms:

• infrastructure
• substructure

Noun

lowest support of a structure; "it was built on a base of solid rock"; "he stood at the foot of the tower"

Synonyms:

• foundation
• base
• fundament
• foot
• groundwork
• substructure
• understructure