About: billion of year

Head noun: billion
Postmodifier: of year

Same concepts

Broader concepts

label	provenance	confidence
thing	isap:35937724	0.541934
idea	isap:72441841	0.435559
long time	isap:79397825	0.351550
year	isap:78466400	0.326173
time	isap:79397826	0.308679
event	isap:40343129	0.289571
earth	isap:39309973	0.237517
origin	isap:271434125	0.234692
age	isap:509614404	0.202735
natural process	isap:431748693	0.199777
life	isap:72356437	0.194700
animal	isap:275845419	0.177352
force	isap:33458033	0.166587
evolution	isap:317875330	0.153855

Narrower concepts

label	provenance	confidence
earth	isap:223360424	0.369593
past	isap:5841049	0.198357
methane	isap:434016113	0.189329
man	isap:232525930	0.063793