I polish my nails though its not that perfect is not a correct grammar.
Faculty is singular (though it has multiple members), so use "has."
In Standard English, it is not. The correct past tense of "bring" is "brought". "Brung" may be used in some dialects, however, though
The grammar appears correct even though it is heard more like, "He is capable of doing this job."
Augustus XIX MMXI (not sure if the grammar is correct though)
The correct grammar is "stronger than I".When in doubt, finish the sentence. You would say, "He is stronger than I am." Therefore, you can say, "He is stronger than I", even though it may sound odd because we are not used to hearing the correct grammar.
Traditional grammar is correct "textbook" grammar. Functional grammar is colloquial grammar, grammar that people use in regular conversation. For instance, people tend to say "Who are you going with?" even though that is incorrect and the correct form would be "With whom are you going?" (prepositions should always precede their objects, and "who" should be in the objective case "whom").
It is often used: Please find enclosed several documents, as per requested. (Though per can be omitted - letters enclosed as requested, etc.)
Well, it depends if it is in dialogue or not. It probably is, though. "John and Bob seemed to have hit it off." I suppose that would work. :)
No. For one thing, "all" should have been capitalized, but I think you meant the verb; it should be "All politics are local," though that's untrue.
Same as you do - "ocean". Spelling is a lot different though.
No, it is a slogan. It means exactly what it seems to mean, even though the grammar isn't perfect (you can't really become better than best, but you get the idea they're going for).
The apostrophe floating on its own at the end of a word is not usually correct in the singular form, and it is certainly incorrect in "house' directions". Write instead "house directions". If the plural is required, the apostrophe at the end of a word is correct. For example, when seeking the directions to a group of houses, it is correct (though somewhat awkward) to write houses' directions.