noun, noun or participle which takes 'suru', intransitive verb
physical movement; stirring
Refers to moving one's body, especially in a confined space or when movement is restricted. Typically used with a negative verb (e.g., 身動きできない).
満員電車で身動きが取れなかった。
I couldn't move at all on the crowded train.
狭い部屋で身動き
I can't even stir in this tiny room.
noun, noun or participle which takes 'suru', intransitive verb
acting freely; doing as one pleases
Extended figurative use: being able to act without constraints. Also commonly used with a negative verb to mean being unable to act freely.
借金のせいで身動きができない。
I can't do anything because of my debts.
上司の監視が厳しくて身動きが取れない。
My boss watches me so closely that I can't act freely.