What is the suffix for hopes and likes?

There isn't a single suffix that applies to both "hopes" and "likes."

* "Hopes" is the plural form of the noun "hope." It doesn't have a specific suffix, but the plural form of many nouns is created by adding "-s" or "-es."

* "Likes" can be either the plural form of the noun "like" or the third-person singular present tense of the verb "like." Again, the plural form uses "-s" or "-es."

In summary: While there isn't a common suffix for both "hopes" and "likes," both words use the common plural suffix "-s" or "-es."