English to English

noun (n)

• the basic structure or features of a system or organization(noun.artifact)

  Synonym:
  infrastructure
  

  source: wordnet30
• lowest support of a structure(noun.artifact)

  Synonym:
  base, foot, foundation, fundament, groundwork, understructure
  

  source: wordnet30
• Same as Substruction.(noun)

  source: webster1913