collector:
(plural: ‘collectors‘; pronunciation: the first and the second ‘c’ are said with a ‘k’ sound as in “king” — for the right pronunciation of this word, please click here)
a person, worker or employee whose job is to collect money or information from others and/or a person who collects, either by buying, getting from friends and relatives or exchanging thing(s) they are interested in,

a famous stamp collector
There are different kinds of collectors:
a tax/debt collector — government official who collects tax money;
a bill collector — an employee who collects money to be paid towards outstanding bills;
a ticket collector — a person whose job is to checks tickets of passengers on public transport buses or railway trains;
a district or region collector (administrator) — in some countries, a highly educated officer who is in charge of the administration of a district or region;

a ticket collector
a coin, stamps, photos, etc. collector — a person who collects rare or old coins, stamps, or any rare or peculiar thing in large numbers as a hobby;
a garbage collector — a worker or an office whose job is to collect dry waste matter from houses, offices, etc., and throw them away at a particular place,
My friend Maggy is a stamp collector, and she’s also called a ‘philatelist’.
Tax collectors have been the most despised officials in the world since ancient times.

a garbage collector
A railway ticket collector on a train has full powers to ask the ticket-less passengers to get off the train.
There are fewer and fewer jobs for the bill collectors these days as the bill payments are mostly made online through bank accounts or credit cards.
In some countries, a district collector is the chief administrative officer of a district, who enjoys certain judicial powers like a magistrate or judge.
Unlike in the past, garbage collectors these days are required to have some basic education as they are expected to read labels on the garbage they collect.
