In Advertising what is meant by power words?

and some examples of power words

Power words are the words can make readers take action.

Some examples below:
How To…
How Would…
How Much…
Who Else Wants…
Inside Secrets Of…
Do You…
100%-Guaranteed!…
Little-Known Secrets…
Closely-Guarded Secrets…
How Would…
Advice To…
At Last…
Money-Making…
Special Offer…
Limited-Time Offer…
Act Now To Get This…
Money-Saving…
No-Risk…
Zero-Risk…
Must See…
Must Attend…
The Shocking Truth About…
Do YOU…
What You Should Know
About…
Complete Details, FREE…
Free Report (Booklet, Book,
Cassette, etc.) …
Call Now For …
Limited To The First ____
(quantity) To Reply…
Limited-Time Opportunity…
How You Can…
You Get…
You Have…
Facts You…
Profit From
Save Time…
Save Money…
If You’re Serious About…
The Truth About…
Free Bonuses…
The Single Most-Important…
Let Me Show You…
Once In a Lifetime…