Difference between Mill Around and Linger

MILL AROUND vs LINGER: VERB

To stay or remain in a place or situation, especially as if unwilling to depart or not easily able to do so.
To remain alive or existent although still proceeding toward death or extinction; to die gradually.
Leave slowly and hesitantly
Move to and fro
Be about
Remain present although waning or gradually dying
Take one's time; proceed slowly
To consider or contemplate for a period of time; to engage in analytical thinking or discussion.

To stay in a place or be slow in leaving it, often out of reluctance: : stay.
To continue or persist.
To remain feebly alive for some time before dying.
To proceed slowly; saunter.
To delay; to loiter; to remain or wait long; to be slow or reluctant in parting or moving; to be slow in deciding; to be in suspense; to hesitate.
To devote considerable time to something, especially in a leisurely fashion.

Proceed slowly
Take one's time
To hang about in a place beyond the proper or usual time
Be about a place without any apparent purpose
To make long; prolong; protract; delay; put off; defer.
To remain in a place or a state for an unusual, undue, or unexpected length of time; defer action, movement, decision, etc., either from inclination or necessity; hold back; tarry; delay; loiter.
To spend in an inactive or tedious manner; drag: with out, and sometimes away.

Puzzle over, Addlebrained, Mill about, Mess about, Lallygag, Hang around, Footle, Lurk, Lounge, Tarry, Loiter, Linger, Lollygag, Loaf, Mill

Mill around, Mill about, Mess about, Lallygag, Hang around, Footle, Loaf, Lounge, Lollygag, Dally, Tarry, Loiter, Dawdle, Hover, Lurk

Puzzle over, Addlebrained, Mill about, Mess about, Lallygag, Hang around, Footle, Lurk, Lounge, Tarry, Loiter, Linger, Lollygag, Loaf, Mill

Persist, Mill around, Mill about, Mess about, Lallygag, Hang around, Footle, Loaf, Lounge, Lollygag, Dally, Tarry, Loiter, Hover, Lurk

Various crew mill around the sound stage, including the Director Martin Wood and Martin Lloyd.
Only their antennae twitched, but they did not move, did not mill around.
In the city centre of Charahi Ansari, under the mellow afternoon sun, families mill around shops, restaurants and kabab corners.
Michael Hampton founded his fiber mill around the same time that we got our first sheep, which was a fortuitous coincidence.
Within the first half a mile of Soda Lake Road, pronghorn antelope mill around a water trough.
Deer are browsers and will often mill around for hours before making it to their destination.
Several people mill around, sipping cocktails and making small talk.
Trojan armies mill around like sheep waiting to be milked.
Christmas revellers and hawkers mill around the cafe.