Example : She shows her dogs frequently.
We will demo the new software in Washington.

Synonyms : demo, exhibit, present, show

Example : The experiment demonstrated the instability of the compound.
The mathematician showed the validity of the conjecture.

Synonyms : establish, prove, shew, show

Example : His high fever attested to his illness.
The buildings in Rome manifest a high level of architectural sophistication.
This decision demonstrates his sense of fairness.

Synonyms : attest, certify, evidence, manifest

Example : Thousands demonstrated against globalization during the meeting of the most powerful economic nations in Seattle.

Synonyms : march