Explanation:

- Collaborate: This word is correctly spelled. It means to work jointly with others or together, especially in an intellectual endeavor.

- Comemorate: This is the wrongly spelled word. It should be "commemorate," which means to honor the memory of someone or something, often with a ceremony or celebration.

Commemorate

- Corporate: This is correctly spelled. It refers to things relating to a corporation, especially a large company or group.

- Conjugate: Correctly spelled as well. It typically refers to the variation of the form of a verb in an inflected language or the combination of different elements.