In-situ and In place

In-situ adjective - Being in the original position; not having been moved.

In place and in-situ are semantically related. In some cases you can use "In place" instead an adverb phrase "In-situ".

In place adverb - In the original or natural place or site.

In-situ and in place are semantically related. Sometimes you can replace phrase "In-situ" with "In place", this phrases are similar.