subject vs thread

subject

noun
  • The main theme or melody, especially in a fugue. 

  • A being that has subjective experiences, subjective consciousness, or a relationship with another entity. 

  • The variable in terms of which an expression is defined. 

  • The main topic of a paper, work of art, discussion, field of study, etc. 

  • A person ruled over by another, especially a monarch or state authority. 

  • A particular area of study. 

  • A citizen in a monarchy. 

  • In a clause: the word or word group (usually a noun phrase) about whom the statement is made. In active clauses with verbs denoting an action, the subject and the actor are usually the same. 

  • That of which something is stated. 

  • An actor; one who takes action. 

  • A human, animal or an inanimate object that is being examined, treated, analysed, etc. 

adj
  • Placed or situated under; lying below, or in a lower situation. 

  • Conditional upon something; used with to. 

  • Likely to be affected by or to experience something. 

  • Placed under the power of another; owing allegiance to a particular sovereign or state. 

verb
  • To make subordinate or subservient; to subdue or enslave. 

  • To cause (someone or something) to undergo a particular experience, especially one that is unpleasant or unwanted. 

thread

noun
  • A continued theme or idea. 

  • A sequence of connections. 

  • A filament, as of a flower, or of any fibrous substance, as of bark. 

  • A long, thin and flexible form of material, generally with a round cross-section, used in sewing, weaving or in the construction of string. 

  • A screw thread. 

  • A unit of execution, lighter in weight than a process, usually sharing memory and other resources with other threads executing concurrently. 

  • The line midway between the banks of a stream. 

  • A series of messages, generally grouped by subject, in which all messages except the first are replies to previous messages in the thread. 

  • Composition; quality; fineness. 

verb
  • To put thread through. 

  • To remove the hair using a thread. 

  • To pass (through a narrow constriction or around a series of obstacles). 

  • To screw on; to fit the threads of a nut on a bolt. 

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