lecturer vs lector

lecturer and lector both are nouns.

Word	Noun	Adjective	Verb	Adverb
lecturer	Yes	No	No	No
lector	Yes	No	No	No

As nouns, lecturer and lector are synonyms defined as:

Other synonyms of lecturer include reader.

lecturer (noun)	lector (noun)
someone who lectures professionally	a public lecturer at certain universities
a public lecturer at certain universities	someone who reads the lessons in a church service; someone ordained in a minor order of the Roman Catholic Church