accessory vs under

accessory

adj
  • Present in a minor amount, and not essential. 

  • Having a secondary, supplementary or subordinate function by accompanying as a subordinate; aiding in a secondary way; being additional; contributing or being contributory. Said of things and actions, very rarely of people (and then usually in a humorous version of the legal sense [or due to confusion between the noun and the adjective]). 

  • Assisting a crime without actually participating in committing the crime itself; being connected as an incident or subordinate to a principal. 

noun
  • Something that belongs to part of another main thing; something additional and subordinate, an attachment. 

  • Something in a work of art without being indispensably necessary, for example solely ornamental parts. 

  • An article that completes one's basic outfit, such as a scarf or gloves. 

  • A person who is not present at a crime, but contributes to it as an assistant or instigator. 

under

adj
  • Insufficient or lacking in a particular respect. 

  • Lower; beneath something. 

  • Under anesthesia, especially general anesthesia; sedated. 

  • In a state of subordination, submission or defeat. 

prep
  • Using or adopting (a name, identity, etc.). 

  • Subordinate to; subject to the control of; in accordance with; in compliance with. 

  • Within the category, classification or heading of. 

  • Below the surface of. 

  • Less than. 

  • In the face of; in response to (some attacking force). 

  • In or at a lower level than; in the area covered or surmounted by. 

  • From one side of to the other, passing beneath. 

adv
  • Insufficiently. 

  • In or to a lower or subordinate position, or a position beneath or below something, physically or figuratively. 

  • In or into an unconscious state. 

  • So as to pass beneath something. 

noun
  • The amount by which an actual total is less than the expected or required amount. 

How often have the words accessory and under occurred in a corpus of books? (source: Google Ngram Viewer )