No, ´kapayıp´ is correct too and comes from ´kapamak´, also meaning ´to close´ or ´to shut´

 Me neither I think I know about 10 words

Second sentence: Have you ever lived (experienced) a loneliness in which you didn´t hear a sound=

And I don´t get the last sentence. ´kapayıp kaçtın´ belongs together, so it cannot be ´how many doors closed to your face´, and to ´escape from´ needs ´-den kaçmak´, could somebody explain this sentence? Seems as if something´s missing?

I think it should be ´what do you know´. The literal translation is ´you cannot know´, but the implication it gives is like ´you cannot know for you have not experienced´. When you say ´what do you know´, for me it implies ´you have not experienced it, so what are you talking of?´, whereas ´what can you know´ to me sounds like ´nobody is able to know´.

When you say ´sen bilemezsin´ to someone (out of context), you generally mean ´you wouldn´t know´.

That´s Kurdish, not Turkish. And if it is ´negri dile min´, then it should mean something like ´don´t cry my heart´. But I am not sure. Sure that it is not Turkish though

 There probably are many more But you learn them by time and by checking the dictionary.

Another example of ´irregularity´ when it comes to words of arab decent:

akıl /-lı

When you see this in the dictionary, a suffix is addid to the original root of the noun, which is ´akl´. So --> aklım, not akılım.

izin --> izninizle, not izininizle

 I don´t know.. it doesn´t count for all words, kitap is arabic (which is clear from the fact that the two types of vowels, i and a, are in the same word.. you would not see that in a word of turkish origine), but still goes according to vowel harmony (kitabım).

You could understand the difference, but you would need to have knowledge of Arabic alphabet then you can realise what the original letters are (was it kef or kaf, sad or dad for example) and know if it should be a hard or a soft vowel. I dont know if theres a fast way to learn this. I suggest you look it up in the dictionary of this website and see if it shows ´lü´ (or smt else) and then just memorize and practice.

Note: deleted juliacerna´s double post.

Meşgul is from Arabic. Words with arabic roots sometimes change, in the dictionary you will see this as: meşgul / -lü

When you add a suffix after such words, it takes the soft one.

Compare:

meşgul - meşgulüm, not meşgulum (I am busy)

kalp - kalbim, not kalbım (my heart)

kabahat - kabahatim, not kabahatım (my mistake)

kanaat - kanaatindeyim, not kanaatındayım (I am of opinion)

 The world people? You mean the people of the rich and developed world. That is worth saving seeds for. Africa has been having an ´agricultural crisis´ since ´year and day´.