time - second, mass - ?

KILOGRAM
List of words for the clue time - second, mass - ? from the crossword:
ERA ASIA EON FLOE WAD BLOB BERG UNIT AMEN EDT EST MEDIA NRA IRAE CLOT EVE NOON PPS ETE HORDE
WordClue
WADamorphous, compact mass
BULKmass, heap
CLOTthrombus, solidified mass of blood
FUZZfrizzy mass of hair or fibre
HEAPpile, mass
HOSTlegion, mass
LOADlot, mass
LOAFusually oblong mass of food
MASSsecond - time, kilogram - ?
PILEmass, agglomeration
PULPsoft, moist mass
RAINdrop (small mass of liquid) ✕1000000
TIMEkilogram - mass, second - ?
CROWDgroup, mass
GROUPcrowd, mass
HORDEbattalion, mass
METERtime - second, distance - ?
OUNCEunit of mass
SECONDmass - kilogram, time - ?
DISTANCEsecond - time, meter - ?
METERtime - second, distance - ?
TERMtime, span