telemarketing vs teleselling

telemarketing and teleselling both are nouns.

Word	Noun	Adjective	Verb	Adverb
telemarketing	Yes	No	No	No
teleselling	Yes	No	No	No

As nouns, telemarketing and teleselling are synonyms defined as:

telemarketing and teleselling: the use of the telephone as an interactive medium for promotion and sales

Other synonyms of telemarketing include telecommerce.

telemarketing (noun)	teleselling (noun)
the use of the telephone as an interactive medium for promotion and sales	the use of the telephone as an interactive medium for promotion and sales