Questions & Answers about Bu kitap şu sözlük kadar kalın değil.
How does kadar form 'as thick as' in this sentence?
Why isn't there any ending attached to sözlük before kadar?
When you compare things using regular nouns like sözlük, the noun stays in its basic dictionary form and doesn't take any extra endings before kadar. Just be careful: if you were using a standalone pronoun instead of a noun, it would need a special ending, like bunun kadar (as much as this).
How does the negative word değil work in this comparison?
What is the difference between using şu and o for 'that dictionary'?
Both can mean 'that', but şu is used when you are actively pointing at the dictionary or drawing attention to it right in front of you. If the dictionary were further away or just mentioned in conversation without being pointed at, you would use o sözlük.