Circumstances that break ablution
1. Blood or pus coming out from somewhere in the body.
2. Mouthful vomiting.
3. Small or large need.
4. Wind output.
5. When milk bleeds and spits up, the color of saliva is red;
6. Fainting;
7. Laughing loud enough to be heard while praying.
It is against the sunnah to face the Qibla during the ghusl. Talking during ghusl is impolite. Ghusl is performed with the private parts covered.
People on whom ghusl is obligatory cannot recite the Holy Qur'an, write its verses and enter the mosque.
Making Tayammum:
In verse 43 of Surah An-Nisa, Allah says: "If you are sick or on a journey, or if one of you has come out of the toilet, or if you have had intercourse with your wives, and you cannot find water, then clean the earth (soil, stone) , sand, dust, etc.) and rub it on your face and hands. Verily, Allah is Oft-Forgiving and Forgiving."
When doing tayammum, one also intends to perform ablution or ghusl. It is also possible to intend by adding both.