Origin: Greek suffix -ist
Lobbyist has 2 different meanings across 1 category:
someone who is employed to persuade legislators to vote for legislation that favors the lobbyist's employer
"After years of working as a consultant, she officially joined her client's firm as their full-time lobbyist to secure favorable tax laws."
A person who is paid to lobby politicians and encourage them to vote a certain way or otherwise use their office to effect a desired result.
"The corporation hired a former senator as a lobbyist to push for new tax breaks before the voting session began."