Electronic circuit

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digital electronics

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difference between gift and present

• We usually say "Christmas presents."

         In most cases, they are interchangeable, but not always.

         For example, if you are really good at languages, I could say that you have a gift for
         languages. "Presents" would not work in that sentence.    
         Thinking about it in a way I've never done before, I guess a "present" is something you      
         present to someone, whereas a gift is something you give to them in any way. We say  
         that  you have a gift for languages because God gave you that ability, but He did not wrap  
         it up in something and present it to you. 

•  In most contexts, these two words can be used interchangeably.
  Example:
  birthday gift / birthday present
  wedding gift / wedding present
  Thanksgiving gift / Thanksgiving present
  Christmas gift / Christmas present

difference between mean and average

As far as everyday usage goes, both mean and average mean the same thing. Usually, in normal speech, we use the term 'average' much more than the term 'mean', which usually sounds more technical.

In statistics, average is used as a name for a general statistic that usually falls around the center of the data. Mean, on the other hand, is usually the sum of all values divided by the total number of values. But this itself applies only for arithmetic means. You can also have differently defined geometric and harmonic means.