Tis forTerracotta
Terriers are small dogs, generally bred to hunt rodents.
A texta is another name for a marker in some countries.
The texture of a surface is how it looks and feels. A woolen blanket has a slightly rough, scratchy texture.
The cantaloupe in the picture has a very distinctive texture.
Tis forThanksgiving
Thatching is an ancient way of making a roof on a house. Thatch is made from a thick layer of straw or reeds, and is thick enough to be watertight.
You use the when you are talking about a specific instance of something rather than a general one. For example, the dog to mean a particular dog or a dog to mean any dog.
Tis forThermometer
A thermometer is a device that tells you how hot or cold something is. There are many different types of thermometers for different heat ranges. Some tell you how hot you are so you know if you are so sick you are running a fever. Some tell you what temperature the air is, and others tell you how hot your oven is.
The thermometer in the picture works by the expansion and contraction of mercury as the temperature changes, but most thermometers today are digital and simply display numbers.