Inauguration vs Introduce - What's the difference?

As a noun inauguration

is inauguration.

(of people) to cause (someone) to be acquainted (with someone else).

(en noun)

The act of inaugurating]], or inducting into office with solemnity; investiture by appropriate [[ceremony, ceremonies.

The formal beginning or initiation of any movement, course of action, etc.; as, the inauguration of a new system, a new condition, etc.

(introduc)

(of people) To cause (someone) to be acquainted (with someone else).

To make (something or someone) known by formal announcement or recommendation.

To add (something) to a system, a mixture, or a container.

To bring (something) into practice.

* {{quote-magazine, date=2013-10-05, volume=409, issue=8856, magazine=(The Economist)

, title= The widening gyre , passage=First introduced in Letchworth Garden City in 1909, the roundabout