recognize

Express greetings upon meeting someone.

Accept (someone) to be what is claimed or accept his power and authority.

“We do not recognize your gods”

Detect with the senses.

Show approval or appreciation of.

“My work is not recognized by anybody!”

“The best student was recognized by the Dean”

Be fully aware or cognizant of.

Grant credentials to.

“The Regents officially recognized the new educational institution”

“recognize an academic degree”

Express obligation, thanks, or gratitude for.

Perceive to be the same.

Exhibit recognition for (an antigen or a substrate).