The 6 core ability scores of D&D 5e

Types of dice for hit points

List of armor types for proficiency

List of weapon categories for proficiency

List of tools for proficiency

List of D&D 5e skills

List of common languages

Moral and ethical alignments

Creature sizes

List of possible damage types in D&D 5e

Tags to classify spells by effect type or mechanic

Tags to classify abilities by effect type or mechanic

Properties that define how a weapon can be used in combat

Properties that define how armor can be used in combat

The 8 schools of magic in D&D 5e

Creature categories of the bestiary

Source ruleset a race comes from

SRD 2024 weapon mastery properties — each weapon has exactly one

Categories of miscellaneous adventuring equipment

SRD 2024 Rules Glossary — conditions a creature can have

SRD 2024 Rules Glossary — degrees of cover in combat

SRD 2024 Rules Glossary — levels of illumination and obscurement

SRD 2024 Rules Glossary — senses that let a creature perceive beyond normal sight

SRD 2024 Rules Glossary — actions a creature can take on its turn

SRD 2024 Rules Glossary — types of rest and what they restore

SRD 2024 Rules Glossary — moving through the world and carrying gear