Kedinero çevirilerinde birkaç küçük değişiklik yaptım. 1.cümlede zaman cümlenin başında daha uygun olur. Kulağa daha iyi geliyor.

Anlam karışıklıığı olmasın diye son cümlede kişiyi [senin] ekledim.

-Iş --->- ing / in the manner of

This suffix can correspond to -ing suffix or the manner of.

- Olayı anlatışı  iki saat sürdü.

  His telling the incident took two hours.

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- Çocuk annesinin hikaye anlatışına bayılıyor.

The child loves his mother´s [manner of telling]  stories.

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- Fırtına bazı gemilerin batışına neden olmuştu.

The storm was the reason for the sinking of some ships.

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- Eylülde güneşin batışı harika olur.

The way the sun sets is wonderful in September.

Note: All verbs in Turkish  take -ış expressing this  meaning.

Deniz  is a noun.  Beyaz is an adjective. 

Noun phrases take possesive whereas adjective compounds never take possesive.

Beyaz ev --->  White house

Here,  beyaz functions as an adjective, [qualifying, describing the house in terms of its colour] 

However, if  there was someone called "Beyaz " as a name , then it would have taken a possesive marker.

Beyaz´ın evi ---> The house of  Beyaz.

or you can use -ip construction,

Bir dilim kızarmış ekmek yiyip namaz kılacağım.

2. I think I heard büyükmüş said. What does that mean if anything? I thought it was said to mean "he has grown" but I may not have heard the word exactly.

Possible context  ---> when you are suprised with the biggness of something you may say it like that by using -miş.

For instance, when you view a house to buy, you go into the house and you are amazed with the size of the house. You can say --->

" ev büyükmüş ! "

By saying this, you are actually saying that  "you are suprised/amazed with the size of the house ".

maz/mez  Oldu  Form ;

With negative aorist tense [mAz] with oldu expresses the action,event ceased to happen.

        Verb stem + maz,mez + oldu + person

Sen gelmez oldun. ---> You stopped coming. [ You used to come but you stopped coming]

O artık bana selam vermez oldu ---> He/She stopped greeting [saying hello to] me.

Onlar bir süredir çay içmez oldular ---> They stopped drinking tea for a while.

Son zamanlarda birbirimizi görmez olduk ---> Lately , we, for some reason unable [stopped] to see eachother.

2 hafta önce seni görmek güzeldi. Konuştuğumuz ve üzerinde anlaştığımız gibi lütfen parayı banka hesabıma gönder.

-mek  bilmiyor/bilmedi

We use this construction when we think something doesn´t/didn´t seem to come to an end.

- Günler geçmek bilmiyor. ---> The days don´t seem to pass. 

- Üç gündür yağan yağmur dinmek bilmiyor. ---> The rain which has been going on for 3 days doesn´t seem to stop.

- Dün okulda zaman geçmek bilmedi. ---> Yesterday at school the time didn´t seem to pass.

- Zorluklar bitmek bilmiyor. ---> The hardships don´t seem to finish. 

-r  suffix 

-r  suffix comes on to some verbs and makes them noun or adjective.

Verb stem +  [a,e,i,ı ]r

Oku  +  r     yaz + ar   --> Okur yazar  [ the person who know how to read and write]

yazar   kasa  --->  cash till

bil + ir   kişi---> bilir kişi [expert witness]

gel + ir     git + er  --->  gelir  gider  [income and expence]

kes + er  ---> keser  [chipping hatchet ]

gül +  er   yüz ---> smiling face

Inan + il + maz = inanilmaz   is actually a double voiced verb.

Voice 1 --> Passive voice which makes it a passive voiced verb using the suffix -ıl ----> to be believed

Voice 2 --> Verbal adjective voice which alters it an adjective using the negative suffix -mez  ---> unbeliveable

So, the verb changes into an adjective meaning by taking two suffixes. [-il, -mez]

Note: you can not apply same method to all verbs 

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When you want to apply the same way to another verb which is -gör in your example it makes it first passive second adjective.

görülmez  ---> [something] that can not be seen 

Gözle görülmez şeyler ---> Things that can not be seen by eye.

However, in the other word, it is more like reflexive.

In reflexive the agent performs and action which is directed to the agent. In other other words it is same person who performs an action and affected by that action.

So, görünmek = to appear

     görünmez ---> does not appear which means, invisible.

     Example : görünmez adam ---> A man who does not appear [ invisible man ]

     Here, a man who performs an action of appearing and he also being affected by that action is same person whereas :

    Gemi buradan görülmez ---> The boat can not be seen from here.

    Here , the person who performs an action of seeing is a different person from the thing [boat] which is not being able to seen.