Heir's Concern is a legal term that refers to the worries and anxieties of an heir or beneficiary of an ESTATE. The two crossword solutions, ESTATE (6 letters) and WILL (4 letters), are related to this term. ESTATE is a term used to refer to the property and possessions of a deceased person, while WILL is a legal document that outlines how the deceased person's ESTATE should be distributed. Together, these two terms form the basis of an Heir's Concern.