kilogram - pound, litre - ?

GALLON
List of words for the clue kilogram - pound, litre - ? from the crossword:
UNIT LITER PETROL YARD MILE METRE KILOMETRE INCH CENTEMETRE ACRE EZRA TONNES MASS RETAIL MAGNUM L QUID PENCE KILO
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 - ?
METREpound - kilogram, yard - ?
PENNYunit of currency in various countries
POUNDlitre - gallon, kilogram - ?
QUARTunit of volume
SECONDmass - kilogram, time - ?
HECTAREpound - kilogram, acre - ?
DISTANCEkilogram - mass, meter - ?
KILOGRAMgallon - litre, pound - ?
STERLINGpound
KILOMETREpound - kilogram, mile - ?
CENTEMETREpound - kilogram, inch - ?
MILEkilogram - pound, kilometre - ?
YARDkilogram - pound, metre - ?