Nowadays, as 'haiku' has accepted colloquial language and people who pursue poetic expression in senryu have been approaching literary language, it can be said that there are hardly any differences in expression between haiku and senryu on the surface.
現在では、「俳句」が口語を取り入れ、川柳の詩的表現を求める者が文語に近づくなど、表現の表面上では俳句と川柳の差がほとんどなくなってきたという部分もある。