difference between protect, defend and guard

protect - (харж хамгаалах, хамгаалан байх)Protect usually means just to keep from harm
[transitive, intransitive] to make sure that someone or something is not harmed, injured, damaged, etc.
defend - (хамгаалах)protection from attack and defend thesis
[intransitive and transitive] to do something in order to protect someone or something from being attacked:
guard - (манах, манан хамгаалах, манаанд гарах)guard is when you protect something from anything
to protect property, places, or people from attack or danger

difference between protect, defend, guard

• It is no use telling the difference between these words.

• --guard--- watch over to protect, {noun-a person who guard someone or something} 
  
  --defend---protection from attack 
  
  --protect---keep from harm or injury

• guard is when you protect something from anything and defend means to protect something or an area that is being attack and protect means to look after something

• ummm well to guard something usually refers to looking out for it, making sure none comes to take it (or if you're guarding a person, noone comes to harm them) 
  To defend could mean to defend someone physically OR to defend their name, like when someone insults them, you stand up for them.. 
  and to protect is a broad one. You could protect someone physically once again, or you could protect them in the sense that you shield them from something, and not just in the instance of fighting.

difference between protect and defend

• They are very similar in meaning, and used interchangeably, however to defend can go a step further, in that when you defend, for example a country, you may take measures to counterattack. Protect usually means just to keep from harm but not so much by counterattacking.

• Yes, you can use that in a verbal sense as well. For example, when you are in university and you submit your thesis (It is a paper which explains all your studies and contains your conclusions from your studies), a committee of professors will make any possible objections to your thesis proposal. You then give a defense. It is called a thesis defense. In your defense you reply with any arguments you can give to back up your thesis. The way I picture it... Let's say there is a family. A burglar breaks in. The mother runs to the children and covers them with her body. She is protecting them. The father goes after the burglar with a stick to fight him back and make him leave, and so he will not go closer to the children and his wife. He is defending them.