Image by the author using Midjourney.
Below is a short summary of every skill, with detailed explanations under the list. Skills marked with a are Core Skills that most adventurers have at least a d4 in. Note that skills are typically very broad.
Skill List
Academics (Smarts): Knowledge of liberal arts, social sciences, literature, history, etc.
Athletics (Agility): Overall athletic coordination and ability. Climbing, jumping, balancing, wrestling, skiing, swimming, throwing, or catching.
Battle (Smarts): Strategy, tactics, logistics, and understanding military operations. A key skill in Mass Battles.
Boating (Agility): Ability to sail or pilot a boat, ship, or other watercraft.
Common Knowledge (Smarts): General knowledge of a character's world.
Crafting (Smarts): The ability to build something from raw materials.
Driving (Agility): The ability to control, steer, and operate ground vehicles.
Faith (Spirit): The arcane skill for Arcane Background (Miracles) and Arcane Background (Shamanism).
Fighting (Agility): Skill in armed and unarmed combat.
Gambling (Smarts): Skill and familiarity with games of chance.
Healing (Smarts): The ability to treat and heal Wounds and diseases, and decipher forensic evidence.
Intimidation (Spirit): A character's ability to threaten others into doing what she wants.
Language (Smarts): Knowledge and fluency in a particular language.
Magewright (Smarts): The arcane skill for Arcane Background (Magewright).
Notice (Smarts): General awareness and perception.
Performance (Spirit): Singing, dancing, acting, or other forms of public expression.
Persuasion (Spirit): The ability to convince others to do what you want.
Religion (Smarts): Knowledge of supernatural and religious events, history, and ways.
Repair (Smarts): The ability to fix mechanical gadgets.
Research (Smarts): Finding written information from various sources.
Riding (Agility): A character's skill in mounting, controlling, and riding a tamed beast.
Science (Smarts): Knowledge of scientific fields such as biology, chemistry, geology, engineering, etc.
Shooting (Agility): Precision with any type of ranged weapon.
Spellcasting (Smarts): The arcane skill for Arcane Background (Magic) and Arcane Background (Blood Magic).
Stealth (Agility): The ability to sneak and hide.
Survival (Smarts): How to find food, water, or shelter, and tracking.
Taunt (Smarts): Insulting or belittling another. Almost always done as a Test.
Thievery (Agility): Sleight of hand, pickpocketing, lockpicking, and other typically shady feats.