In Architecture the word typology is used to describe a group or type of buildings.
For example here it is being used: https://www.youtube.com/watch?v=7-LjOZT8Nxw&t=1m05s
I find overly confusing as intuitively I hear words with ology to be the study of something, geology - study of the earth, ornithology - study of birds, scientology - study of being in a cult (ha), and so on.
For me typology is the study of types and if you doing typology and categorizing buildings as an architect those categories would be types.
I know the jargon of different fields may not stick to the strict definition of a word. And maybe quite different, but this one seems especially wrong and confusing.