Potentially - likely, possible able to happen
The giant earth quake and tsunami potentially have the most effect in the world because that can be a signal of the earth changing.
Proposal - To confess, suggest, recomended
The man make a proposal to marry her in a very romantic way
Hazard - Dangerous
All of these signs are represent hazard things like poison, fire, electrical....
Empower - authorise, allowable, enable
Gun are empower in some jobs like police so they can make sure the country is safe
Ample - Wide, extendsive...
From 2PM to 5PM, we have an ample of time.