Perfect Rhymes (same vowel and ending sound):
* None! "Theology" is unique in its sound.
Near Rhymes (similar vowel sound, but not same ending):
* geology
* psychology
* zoology
* anthropology
* ecology
* technology
Eye Rhymes (spelled similarly, but pronounced differently):
* ideology
Rhyming Phrases:
* "To be free of all ideology"
* "To study the history of geology"
* "The power of technology"
It really depends on the context of your rhyme. For example, if you're writing a poem about the history of religion, "geology" might work well as a near rhyme. If you're writing a song about the impact of technology, "ideology" could be an interesting eye rhyme.
Ultimately, the best rhyme is the one that best fits your needs!