1. to match something or someone which one currently perceives to a memory of some previous encounter with the same entity.
2. to acknowledge the existence or legality of something.; treat as worthy of consideration or valid.
3. to acknowledge or consider as something.
4. to realise or discover the nature of something; apprehend quality in; realise or admit that.
5. to give an award.

1. show approval or appreciation of
2. detect with the senses
3. be fully aware or cognizant of
4. grant credentials to
5. express greetings upon meeting someone
6. express obligation, thanks, or gratitude for
7. accept (someone) to be what is claimed or accept his power and authority
8. perceive to be the same