Class row (4)
I believe the answer is:
rank
I believe this is a double definition.
'class' is the first definition.
(I have seen 'Social class ' mean 'rank' so perhaps 'class' could also mean 'rank')
'row' is the second definition.
(thesaurus)
(Other definitions for rank that I've seen before include "Relative status" , "fare might be found here" , "Putrid and smelly" , "High social standing" , "Row of people standing abreast" .)