I want to know the answer to the following question:
What are written with a single character?
All the background I'm provided with is that "Chinese characters are primarily morphosyllabic, meaning that most Chinese morphemes are monosyllabic and are written with a single character, though in modern Chinese most words are disyllabic and dimorphemic, consisting of two syllables, each of which is a morpheme.". Is that enough to answer the question?
Answer: yes