Anyway, here I go again. Per the AP Stylebook:
In other words, if you can swap it out for contain, comprise is likely the word you want. Therefore, my brain comprises very little accumulated knowledge about the word comprise.
Compose means to create or put together. It commonly is used in both the active and passive voices: She composed a song. The United States is composed of 50 states. The zoo is composed of many animals.
Comprise means to contain, to include all or embrace. It is best used only in the active voice, followed by a direct object: The United States comprises 50 states. The jury comprises five men and seven women. The zoo comprises many animals.