What is the difference between tender and submit?

[Olumide]

Test No. incompl/advan-31 "Letter Writing (3)", question 1

Dear Sir, having read your advertisement, I should like to ......... this letter as my application for the post of marketing manager.

(a) deliver
(b) submit
(c) return
(d) send

Test No. incompl/advan-31 "Letter Writing (3)", answer 1

Dear Sir, having read your advertisement, I should like to submit this letter as my application for the post of marketing manager.

Correct answer: (b) submit
_________________________

Hi, why can't one say "tender" in place of "submit"?

[Torsten]

In this sentence you need a verb and tender can be either an adjective or a noun while submit is a verb which means to send.

TOEIC listening, talks: A voice mail message greeting from a bank