program line vs instruction

program line and instruction both are nouns.

Word	Noun	Adjective	Verb	Adverb
program line	Yes	No	No	No
instruction	Yes	No	No	No

As nouns, program line and instruction are synonyms defined as:

program line and instruction: (computer science) a line of code written as part of a computer program

Other synonyms of program line include command, statement.

program line (noun)	instruction (noun)
(computer science) a line of code written as part of a computer program	the profession of a teacher
	the activities of educating or instructing; activities that impart knowledge or skill
	(computer science) a line of code written as part of a computer program
	a message describing how something is to be done