tiny speck
- dotSmall circular mark
- moteTiny airborne particle
- particleMinute piece of matter
- fleckMinute spot or particle
- grainCereal plant's harvest unit
dust · crumb · bit · atom · pixel · pinpoint · fragment · sliver · morsel · iota · smidgen · microscopic · minuscule · infinitesimal · glint · sparkle · freckle · pollen
significance/importance
tiny speckcornerstone
Foundational building block
linchpin · centerpiece · crux · keystone · titan