nouns
a message describing how something is to be done
"he gave directions faster than she could follow them"
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"
the profession of a teacher
"he prepared for teaching while still in college"; "pedagogy is recognized as an important profession"
(computer science) a line of code written as part of a computer program