Homogeneous

1. Of the same or similar nature or kind: 'a tight-knit, homogeneous society' (James Fallows).
2. Uniform in structure or composition throughout.
3. Mathematics. Consisting of terms of the same degree or elements of the same dimension.

[This is very nicely written, but this is not supposed to be a dictionary. Another page is titled homogeneity. Perhaps this material should be incorporated into that page, which would become a disambiguation page.]