prominent vs signal

prominent

adj
  • eminent; distinguished above others 

  • standing out, or projecting; jutting; protuberant 

  • likely to attract attention from its size or position; conspicuous 

noun
  • Any of various moths having a conspicuous projection on the inner margin of the wings. 

  • In Nazi concentration camps, an inmate entrusted with minor supervisory duties and rewarded with perquisites. 

signal

adj
  • Standing above others in rank, importance, or achievement. 

verb
  • To communicate with (a person or system) by a signal. 

  • To indicate; to convey or communicate by a signal. 

noun
  • A token; an indication; a foreshadowing; a sign. 

  • A signalling interaction between cells 

  • An electromagnetic action, normally a voltage that is a function of time, that conveys the information of the radio or TV program or of communication with another party. 

  • Any variation of a quantity or change in an entity over time that conveys information upon detection. 

  • An on-off light, semaphore, or other device used to give an indication to another person. 

  • A simple interprocess communication used to notify a process or thread of an occurrence. 

  • Useful information, as opposed to noise. 

  • An action, change or process done to convey information and thus reduce uncertainty. 

  • A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action. 

  • A sequence of states representing an encoded message in a communication channel. 

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