Translation of hereditary in Spanish

A proposal for our further cooperation: I will translate your texts in English and you translate my letters into Spanish. I will focus on spelling and grammar, and I will correct your sentence structure.
I'm quite tired too by now. So, if it doesn't work just drop me an email and I'll see it first thing in the morning. I wanted to add new words to the dictionary however the other issues kept me more busy than I have imagined.
These may be linguistic and cultural differences. There are indeed various regions throughout Spain and the word choice is not always the same. It is sometimes hard to understand people from other cities.