instruction in WordNet English dictionary

1. (computer science) a line of code written as part of a computer program
   instruction  command  statement  program line 
   
2. the activities of educating or instructing; activities that impart knowledge or skill
   "he received no formal education"; "our instruction was carefully programmed"; "good classroom teaching is seldom rewarded"
   education  instruction  teaching  pedagogy  didactics  educational activity 
   
3. a message describing how something is to be done
   "he gave directions faster than she could follow them"
   direction  instruction 
   
4. the profession of a teacher
   "he prepared for teaching while still in college"; "pedagogy is recognized as an important profession"
   teaching  instruction  pedagogy