Hence, while we can never become aware of the fine phonological and syntactic properties of the word "dog", we can very much become aware of its sound just as we can become aware of the sound of the creaking door.
Hence, while we can never become aware of the fine phonological and syntactic properties of the word "dog", or indeed its conceptual structure, we can certainly become aware of its sound. In the same way, we can become aware of the sound of the creaking door.