What is the word that means to make everything same kind?

There isn't one perfect word that means "to make everything the same kind". It depends on the context and what kind of sameness you're aiming for. Here are some options with different nuances:

For physical objects:

* Homogenize: This implies making something uniform in texture, composition, or quality. Example: "They homogenized the milk to make it smoother."

* Standardize: This implies making something conform to a specific set of rules or specifications. Example: "The factory standardized the production process to ensure consistency."

* Uniformize: This emphasizes making everything look or appear the same. Example: "The company uniformized its employees' dress code."

* Amalgamate: This suggests merging different things into one, creating a mixture. Example: "They amalgamated the two companies into one."

For abstract concepts:

* Unify: This implies bringing different things together under one idea or principle. Example: "The leader tried to unify the country under a common purpose."

* Harmonize: This suggests creating agreement or balance among different elements. Example: "The architect harmonized the building's design with the surrounding landscape."

* Synchronize: This implies making things happen at the same time. Example: "The dancers synchronized their movements perfectly."

Other possibilities:

* Level: This can imply making things equal in some way. Example: "They leveled the playing field for all competitors."

* Equalize: Similar to "level", this means making things the same in quantity or value. Example: "They equalized the distribution of resources."

The best word will depend on the specific context and the type of sameness you want to convey.