Use 'pull apart' when describing physically separating objects that are joined, stuck, or tangled.

Physical Action

'Pull apart' can suggest careful separation, to avoid damage.

Gentle Separation

In relationships, 'pull apart' is often used metaphorically to describe the erosion of a bond.

'Pull apart' hints at sorrow or regret over a weakening relationship or group.

When criticizing, 'pull apart' implies thorough and sometimes harsh analysis.

'Pull apart' can be used in work situations where ideas or performance are examined critically.