ACT - Something done, a deed.
CAT - Any similar animal of the family Felidae, which includes lions, tigers, bobcats, etc.
GUT - The alimentary canal, especially the intestine.
HAT - A covering for the head, often in the approximate form of a cone or a cylinder closed at its top end, and sometimes having a brim and other decoration.
HUG - An affectionate close embrace.
HUT - A small wooden shed.
TAG - A small label.
TUG - To pull or drag with great effort.
HAG - A witch, sorceress, or enchantress; also, a wizard.
TAU - The name of the letter T/τ in the Greek, Hebrew and ancient Semitic alphabets, being the nineteenth letter of the Classical and Modern Greek, the twentieth letter of Old and Ancient Greek.
CHAT - To be engaged in informal conversation.
THUG - To commit acts of thuggery, to live the life of a thug, or to dress and act in a manner reminiscent of someone who does.
CHUG - A dull, fairly quick explosive or percussive sound, as if made by a labouring engine.
CAUGHT - Of the method of being out in which the striker hits the ball and a fielder catches it.