Bottom-up and Upside-down

Bottom-up adjective - Of an approach to a problem that begins with details and works up to the highest conceptual level.

Upside-down and bottom-up are semantically related. In some cases you can use "Upside-down" instead an adverb phrase "Bottom-up".

Upside-down adjective - Lacking in order, neatness, and often cleanliness.

Bottom-up and upside-down are semantically related. Sometimes you can replace phrase "Bottom-up" with "Upside-down", this phrases are similar.