pound - kilogram, yard - ?

METRE
List of words for the clue pound - kilogram, yard - ? from the crossword:
UNIT ACRE INCH LITRE HECTARE GALLON METER KILO TIME MILE KILOMETRE CENTEMETRE ARF SOLD GRR GAIN LITER EZRA TONNES
WordClue
ACREkilogram - pound, hectare - ?
INCHkilogram - pound, centemetre - ?
MASSsecond - time, kilogram - ?
MILEkilogram - pound, kilometre - ?
TIMEkilogram - mass, second - ?
UNITkilogram or hertz
YARDkilogram - pound, metre - ?
LITREpound - kilogram, gallon - ?
METERmass - kilogram, distance - ?
POUNDmetre - yard, kilogram - ?
GALLONkilogram - pound, litre - ?
SECONDmass - kilogram, time - ?
HECTAREpound - kilogram, acre - ?
HUNDREDFranklin, yard
DISTANCEkilogram - mass, meter - ?
KILOGRAMyard - metre, pound - ?
STERLINGpound
KILOMETREpound - kilogram, mile - ?
CENTEMETREpound - kilogram, inch - ?
KILOMETREpound - kilogram, mile - ?
CHALKpowdery limestone