Introduction vs. Greeting

Difference Between Introduction and Greeting
Introductionnoun
The act or process of introducing.
Greetingnoun
A conventional phrase used to start a letter or conversation or otherwise to acknowledge a person's arrival or presence.
It's polite to begin a letter with a greeting, but this practice is less common in email.Introductionnoun
A means, such as a personal letter, of presenting one person to another.
Greetingnoun
(uncountable) The action of the verb to greet.
Introductionnoun
An initial section of a book or article, which introduces the subject material.
Greetingnoun
(usually plural) an acknowledgment or expression of good will (especially on meeting)
Introductionnoun
A written or oral explanation of what constitutes the basis of an issue.
Introductionnoun
the first section of a communication
Introductionnoun
the act of beginning something new;
they looked forward to the debut of their new product lineIntroductionnoun
formally making a person known to another or to the public
Introductionnoun
a basic or elementary instructional text
Introductionnoun
a new proposal;
they resisted the introduction of impractical alternativesIntroductionnoun
the act of putting one thing into another
Introductionnoun
the act of starting something for the first time; introducing something new;
she looked forward to her initiation as an adultthe foundation of a new scientific societyhe regards the fork as a modern introduction