yard - metre, pound - ?

KILOGRAM
List of words for the clue yard - metre, pound - ? from the crossword:
METER FOOT EZRA STERE LITRE ACRE UNIT TIME PROSODY MEASURE M KILOLITRE KILOLITER HECTARE GALLON CENTARE CADENCE BEAT ALE
WordClue
TOEdigit of a foot
ACREmetre - yard, hectare - ?
HEELpart of the foot
INCHkilogram - pound, centemetre - ?
MASSmeter - distance, kilogram - ?
MILEkilogram - pound, kilometre - ?
TIMEmeter - distance, second - ?
YARDkilogram - pound, metre - ?
ANKLEwhere the foot and the leg meet
LITREyard - metre, gallon - ?
METREpound - kilogram, yard - ?
POUNDmetre - yard, kilogram - ?
GALLONmetre - yard, litre - ?
SECONDdistance - meter, time - ?
HECTAREyard - metre, acre - ?
HUNDREDFranklin, yard
DISTANCEkilogram - mass, meter - ?
STERLINGpound
KILOMETREpound - kilogram, mile - ?
CENTEMETREpound - kilogram, inch - ?
LITREyard - metre, gallon - ?
KIPPAHyarmulke