Τα βάρη (the plural ) can be used in Classical Greek for 'oppression/grief'-see LSJ in loc.:-
βάροσ [ᾰ],ουσ, Ion. εοσ, τό, weight, Hdt.2.73, etc.
a weight, burden, load, τέκνων A.Ch.1000, etc.; β. περισσὸν γῆσ S.Fr.945: pl., βάρη weights, Arist.Mech.850a30.
oppressiveness, τὸ τῆσ ὀσμῆσ ἀφόρητον...