Electronic components can be loosely divided between semiconductors and other active / passive electronic components and sub-systems.
Semiconductors serve different purposes (computing, storage, power management, communication, etc.) and are found in pretty much each and every electronic device. Product markets are generally concentrated and dominated by a handful of global players. The remainder of the industry is far more fragmented and generally more commoditized, with companies manufacturing everything from printed circuits boards to electronic displays through to resistors, capacitors and switches.