Material form
narrower: Particle
narrower: Mixture
narrower: Precursor
narrower: Powder
narrower: Coating
narrower: Thin film
broader: Material description
type: Concept

Particle
type: Concept
broader: Material form

Mixture
type: Concept
broader: Material form

Precursor
type: Concept
broader: Material form

Powder
type: Concept
broader: Material form

Coating
type: Concept
broader: Material form

Thin film
type: Concept
broader: Material form

Material description
type: Concept
narrower: Material form