Common words:
* Cognition: The mental process of acquiring knowledge and understanding through thought, experience, and the senses.
* Recognize: To identify someone or something from previous knowledge or experience.
* Acknowledge: To accept or admit the existence or truth of something.
* Incognito: Having one's identity concealed.
* Cognizant: Aware of something.
* Cognize: To know or perceive.
Less common words:
* Cognoscenti: A person who is a recognized expert in matters of taste or connoisseurship.
* Cognoscible: Capable of being known or understood.
* Cognate: Related in origin or derivation.
* Precognition: Knowledge of an event before it happens.
Words with cogn in the beginning:
* Cognate: Related in origin or derivation.
* Cognizable: Capable of being known or understood.
* Cognizance: Knowledge or awareness.
Words with cogn in the middle:
* Recognize: To identify someone or something from previous knowledge or experience.
* Acknowledge: To accept or admit the existence or truth of something.
* Incognito: Having one's identity concealed.
This is not an exhaustive list, but it provides a good starting point for exploring words with "cogn" in them.