Lethargy

Is feeling tired equivalent to feeling lethargy? 

Some would answer yes, while some would probably say no. 

Tired is the most commonly used term in describing the feeling that we do not want to do anything. Sometimes it is due to lack of rest but sometimes it is simply by choice. For example, we do not want to get out of the house because there really is nothing interesting to do out there and we say "I am tired of the same old routine every Sunday. I might as well just choose to stay home this Sunday." 

The word tired is also more commonly used because of its simplicity in writing as well as pronunciation. This makes lethargy the better word to be used to describe the feeling of lack of energy. But what really is the difference between these two words? They sound different. They spell different. Do they mean different too? 

Perhaps not everyone would agree with the meaning perceived here. This is the way some people might see it. 

Tired refers to lack of energy with a cause. For example one is tired because one cannot sleep, or one is tired because one has done a lot of work for the day. After a good night's rest and energy is restored, one will be back to normal. 

Lethargy on the other hand refers to lack of energy, can be with or without a cause. For example one can feel lethargy because of lack of rest, but one can also feel lethargy without any direct cause at all. Perhaps it is the air quality. Perhaps it is hydration. Perhaps it is the side effects of having a vaccination. There is always a cause but because we lack understanding, we cannot find the cause and we think it has no cause. 

Perhaps it is also safe to say that lethargy sounds more serious than that of tired. Some people might think so because it is a less commonly used word. Some people might think so because it has more alphabets in it. Some people might think so because it is harder to pronounce. Whatever the reason, it is always great practice to get sufficient sleep, drink enough water, eat nutritious foods, and keep the mind clear. 

Note: For better explanation of the word tired and lethargy, please refer to a dictionary.