There are two types of resting:

Class Recovery Guide

Class

Short Rest

Long Rest

Artificer

Spend Hit Dice

Spell slots and class resources

Barbarian

Spend Hit Dice

Rage uses, Hit Points, most resources

Bard

Spend Hit Dice

Bardic Inspiration uses, spell slots, Hit Points

Cleric

Spend Hit Dice

Channel Divinity, spell slots, Hit Points

Druid

Spend Hit Dice

Wild Shape uses, spell slots, Hit Points

Fighter

Second Wind, Action Surge, spend Hit Dice

All resources restored

Monk

Focus Points, spend Hit Dice

All resources restored

Paladin

Spend Hit Dice

Spell slots, Channel Divinity, Hit Points

Ranger

Spend Hit Dice

Spell slots and class resources

Rogue

Spend Hit Dice

Most class resources restored

Sorcerer

Spend Hit Dice

Sorcery Points, spell slots, Hit Points

Warlock

Spell slots, spend Hit Dice

Mystic Arcanum and other daily features

Wizard

Spend Hit Dice

Spell slots and class resources