should vs suck

should

noun
  • Something that ought to be the case as opposed to already being the case. 

verb
  • Will be likely to (become or do something); indicates a degree of possibility or probability that the stated thing will happen or be true in the future. 

  • Indicates that something is expected to have happened or to be the case now. 

  • Used to express a conditional outcome. 

  • With verbs such as 'see' or 'hear', usually in the second person, used to point out something remarkable in either a good or bad way. 

  • To make a statement of what ought to be true, as opposed to reality. 

  • Used to impart a tentative, conjectural or polite nuance. 

  • Used to express what the speaker would do in another person's situation, as a means of giving a suggestion or recommendation. 

  • Simple past tense of shall. 

  • In questions, asks what is correct, proper, desirable, etc. 

  • Used to issue an instruction (traditionally seen as carrying less force of authority than alternatives such as 'shall' or 'must'). 

  • Used to give advice or opinion that an action is, or would have been, beneficial or desirable. 

  • Used to form a variant of the present subjunctive, expressing a state or action that is hypothetical, potential, mandated, etc. 

suck

noun
  • Badness or mediocrity. 

  • An act of fellatio. 

  • Milk drawn from the breast. 

  • A weak, self-pitying person; a person who refuses to go along with others, especially out of spite; a crybaby or sore loser. 

  • An instance of drawing something into one's mouth by inhaling. 

  • An indrawing of gas or liquid caused by suction. 

  • A part of a river towards which strong currents converge making navigation difficult. 

  • A sycophant, especially a child. 

  • The ability to suck; suction. 

verb
  • To be inferior or objectionable: a general term of disparagement, sometimes used with at to indicate a particular area of deficiency. 

  • To perform fellatio. 

  • To work the lips and tongue on (an object) to extract moisture or nourishment; to absorb (something) in the mouth. 

  • To pull (something) in a given direction, especially without direct contact. 

  • To perform such an action; to feed from a breast or teat. 

  • To use the mouth and lips to pull in (a liquid, especially milk from the breast). 

  • To put the mouth or lips to (a breast, a mother etc.) to draw in milk. 

  • To extract, draw in (a substance) from or out of something. 

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