linesman vs electrician

linesman and electrician both are nouns.

Word	Noun	Adjective	Verb	Adverb
linesman	Yes	No	No	No
electrician	Yes	No	No	No

As nouns, linesman and electrician are synonyms defined as:

linesman and electrician: a person who installs or repairs electrical or telephone lines

Other synonyms of linesman include lineman.

linesman (noun)	electrician (noun)
a person who installs or repairs electrical or telephone lines	a person who installs or repairs electrical or telephone lines
official (in tennis, soccer, football, etc.) who assists the referee in some way (especially by watching for out of bounds or offside)