Dear vs. Deer
We'll discuss what "dear" and "deer" mean in a minute. But before we start, let's quickly go through a short explanation on the coincidence that appears when pronouncing "dear vs. deer". Both words sound the same because of their almost identical spellings.
This phenomenon appears because the two words are homophones, which means they have distinct meanings as well as different spellings, despite the fact that they sound exactly the same. This is also the case with other homophones such as "flour vs. flower", "hair and hare", and many others.
When do we use "dear"?
At its core, "dear" is an adjective. The word is used to describe someone who is liked, a person who is known and liked very much. But the same adjective can also describe something that is expensive - this is especially used as another word for "expensive" in UK English.
You may also find "dear" in the beginning of most formal letters, placed in front of the name of the person whom the letter is written for, as a polite form of addressing that person. Besides being used as a form of greeting, "dear" can also be used as exclamation that expresses disappointment or surprise.
When do we use "deer"?
As already mentioned above, despite sounding so similar with "dear", the word "deer" has no connection or correlation to "dear". "Deer" is always used as a noun, and it is the name of a wild animal, with antlers if it's a male, that is sometimes hunted for game or food. Think Bambi!
Make sure you don't confuse "dear" for "deer" because their meanings have no connection at all. The latter is the name of a wild animal, whereas the former is an adjective for something or someone beloved.