The word gut refers to a part of the body, but it has some metaphorical meanings, too. Your "gut" is your stomach. Some men have a "beer gut" (a big stomach from drinking too much beer!) and some people talk about wanting to do exercise to "lose their gut" (make their stomach smaller).
We also have the expressions gut reaction or gut feelings. These are feelings you have when you are certain that you're correct, but you can't explain why logically. It's just a strong feeling from deep inside you. For example:
When I met Bob, I had a gut feeling that he was dishonest.
Guts in the plural form refers to the inside of your stomach - your intestines and internal organs. But it's also used to mean courage or bravery. If someone "has the guts to do something," then they have enough courage to do it:
I don't have the guts to go skydiving.
r if something requires courage, you can say it "takes guts":
My brother corrected his boss during a meeting in front of all the other employees. That takes guts.
Steve moved to a country where he didn't speak the language at all - that takes guts!
LPG is a mixture of two flammable but nontoxic gases called propane and butane. Both of these are hydrocarbons (their molecules are made from different combinations of hydrogen and carbon atoms): propane molecules (C3H8) have eight hydrogen atoms attached to three carbon atoms, while butane molecules (C4H10) have ten hydrogen atoms bonded to four carbon atoms. LPG sometimes contains a variation of butane called isobutane, which has the same component atoms (four carbons and ten hydrogens) connected together in a slightly different way.