To classify the noun, Chinese nouns can be preceded by a [Numeral + Classifier] sequence, which is one of their distinctive features. For example, 四磅 豬肉 ‘four pounds of pork.’
Another characteristic of nouns is that they can neither be negated by bù 不 ‘not’ nor be modified by the intensifier hěn 很 ‘very.’
But verbs can be negated by bù 不 ‘not’ in Chinese. For example, 我[不]休息 ‘I do not rest.’
Action verbs are compatible with aspect markers, such as the progressive aspect marker zài 在. For instance, 我[在]研究這個問題, ‘I am studying this problem.’ Stative verbs can be modified by the intensifier hěn 很, such as 我 [很]尊敬他 ‘I respect him (a lot).’
Reference:
Cheung, C. C. H. (2016). Chinese: Parts of speech. The Routledge encyclopedia of the Chinese language, 242-294. https://www.researchgate.net/publication/262300838_Cheung_Chi-Hang_Candice_2016_Chinese_Parts_of_speech_In_Sin-Wai_Chan_ed_The_Routledge_Encyclopedia_of_the_Chinese_Language_New_York_Routledge