Meaning of Islamic words

Q: What is the meaning of "for the sake of Allah"?

Q: What is the difference between "Jannah" and "Samaawaath"?

Q: What is the difference between fatwa and taqwa? I could not understand when a man told me this difference. I only know that if someone asks fatwa, it is just because of taqwa. So I could not understand the difference, I was told about. He gave an example:- It is fatwa to lengthen the beard one fist and lengthening the beard 2 inches more than one fist is taqwa. But I know that if I lengthen my beard up to one fist, it is because of Taqwa, otherwise I would have trimmed it. Please clarify if there is exactly any differnce as I am told about? Also explain the given example on beard to be correct or not. Jazakallah.

Q: What is aafiyah?

Q: What should one reply when someone says Jazakallahu khayran to you?

Q:

1. Is it a sin to commit any act of makrooh tahreemee. How serious is it. Please give me reference from Arabic books like shami etc.
2. After how long does a makrooh tahreemee become haraam?

Q: What is the exact meaning of Amana wa Sadqana?

Q: I received a posting in Facebook and email that the correct way to write is In Shaa Allah in three separate words. Writing Insha Allah or Inshallah means Create Allah (Naoodhubillah) which is wrong. Please confirm the correct way to write In Shaa Allah as per Qur'anic grammar?

Q: I want to ask that what is the definition of ummat from the Shari'ah and general aspect? I have asked from general aspect because I want to know what should one reply to a person if he asks what is ummat? Also tell that is this word of ummat used in Qur'an and Hadith?

Q: A very common practise in electronic communication is to write inshAllah with capital A, alhamduliLlah with capital L etc in order to make ta'zeem of Allah's name. Is there virtue in doing this, or is it better to write "inshallah" and "alhamdulillah" without the capital letters, in order to avoid making it a bida'?