demonstration

definition: 
An act of showing that something exists or is true by giving proof or evidence;A public meeting or march protesting against something or expressing views on a political issue:
sentence: 
These ships were handed over to Turkey as a demonstration that Germany was Turkey's true friend at sea as well as on land.
The public began to challenge political leaders in demonstrations and marches
difficulty: 
very easy
toefl frequency: 
3
toefl classification: 
adverb: 
adjective: 
demonstrative
adverb sentence: 
adjective sentence: 
I'm not a very demonstrative person, having always been taught that emotion leads to weakness, so I was more than a little embarrassed.
verb: 
demonstrate
verb sentence: 
The applicant had demonstrated that health and safety guidelines had been complied with and approval of the mast was recommended.
noun: 
noun sentence: