Both have a ghost that has a mystery that needs solved.
In SSW the ghost is a mother that is trying to find out how she dies. She is assisted by her son and a girl that can her ghost. Together they solve the mystery,
In TLS a police officer meets a ghost who haunts his room and can not remember anything about her past . The two work together to solve the mystery surrounding her.

older female lead trying tradition with how they want to live thier life. Both female leads are going against what thier family wants them to do.

they are both about time travel. the heroine adjusting to past and making a difference.
If you like time travel give it a try, I found it a little slow but it was fine,

they are both about divorce
they both have an eccentric lawyer
divorce attorney shin is more serious Isharyou Bengoshi is not as serious
both i thought was pretty good

In both series the female lead travels from the future to the past
in both series the mother of the male lead is against the female lead

they are both about solving the mystery behind the death of the male lead's mother.
they both have ghost in them
they both have romance.
they are both pretty good shows.

both deal with time travel.
both have the female come from the future to the past
both portray what life was like in the past

they are both about the Female lead traveling from the present to the past. In both series the female lead has difficulty adjusting to the past but they are both able to contribute in their own way.

In both the ghosts don't reincarnate. They both have a mystery to solve. Both have romance and a mystery to solve.

Both dramas have mystery surrounding the female ghost's death & supernatural aspects. Both dramas have a mix of romance, comedy,drama. Now in SSW the ghost is a mother while in PLH the ghost is a girl.

They both deal with ghosts. In SSW its a ghost mother . In PR it's a girl ghost trying to find her body. Each story has a mystery to solve.

both deal with attorneys that are little unconventional in how they solve their cases. EAW is an awesome series I would highly recommend watching it. It deals with an autistic attorney solving cases. DAS- i have only watched the first episode but I was impressed so far with how the attorney is solving the case.