Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.

How to describe a person in a word who keeps mentioning about his own life story or about himself for every topic that is being conversed? Be it interesting or boring, he has the ability to pick out something that has happened to him or he himself creates a chance to talk about himself. Edit: The person is not selfish. He does care for others. I am just saying that the person relates everything to his life and talks about it, that too not even in a conceited way. This person is experienced enough to relate everything to things that has happened to him.
Self-Absorbed This is similar to self-centered, but perhaps has less of a negative connotation. A person who talks about themselves a lot may simply be introverted, and socially awkward, and therefore not have a lot else to talk about. They may also try to give themselves a sense of social relevance, not realising that it is actually counter-productive.

I'm wondering which one of these expressions is correct? This stuff or these stuff?.
Stuff is a collective noun it represents a group of objects. Just as one would say 'this group' or 'this pile,' one would say 'this stuff'.

This very well may just be outside our lexicon at the moment, due to the fact that space travel is extremely limited, but I am looking for the proper terminology to refer to a space vessel that had been rendered a wreck or a derelict, and was repaired and refitted into a workable vessel. In naval terms, a sunk vessel would be refloated, but that term is awkward to use in space. Something like reatmosphered fits the context, but it is awkward and not in the lexicon (though its form makes its intent clear, and could be readily used). Any ideas?.

Consider recommission, which is defined (somewhat obviously) by oxforddictionaries.com as 'commission again'. This sense of 'commission', in turn, is defined by oxforddictionaries.com as Bring (something newly produced) into working condition

