metre - yard, hectare - ?

ACRE
List of words for the clue metre - yard, hectare - ? from the crossword:
METER ARE FOOT POUND GALLON STERE LITRE TEACHER MILE KILOMETRE INCH CENTEMETRE AREA ACRES TIME PROSODY MEASURE M KILOLITRE
WordClue
INCHhectare - acre, centemetre - ?
MASSmeter - distance, kilogram - ?
MILEhectare - acre, kilometre - ?
TIMEmeter - distance, second - ?
YARDhectare - acre, metre - ?
LITREyard - metre, gallon - ?
METREacre - hectare, yard - ?
POUNDmetre - yard, kilogram - ?
GALLONmetre - yard, litre - ?
FOREVERDiamonds Are ... (film)
HECTAREyard - metre, acre - ?
HUNDREDFranklin, yard
SAWMILLwhere logs are cut
STADIUMvenue where sporting events are held
DIAMONDSAre Forever (film)
DISTANCEsecond - time, meter - ?
KILOGRAMyard - metre, pound - ?
KILOMETREacre - hectare, mile - ?
CENTEMETREacre - hectare, inch - ?
GREENHOUSEbuilding in which plants are grown
PROCEDUREmethod, routine
POUNDmetre - yard, kilogram - ?