As nouns the difference between lunker and lurker
is that lunker is (us) anything, especially a game fish, that is especially large for its type; a whopper while lurker is agent noun of lurk; one who lurks.
lunker
English
Noun
(
en noun)
(US) Anything, especially a game fish, that is especially large for its type; a whopper.
lurker
English
Noun
(
en noun)
Agent noun of lurk; one who lurks.
# (Internet) A user who observes a community rather than participating; someone who reads or takes advantage of content on a website, newsgroup, etc. but does not contribute.
(archaic, UK, dialect) A small fishing-boat.