The question whether separable words are compound words or phrases in Mandarin has not been solved. Building upon previous research, this study selects verb-complement structures as its focal point. Based on the number of internally insertable elements, these structures are categorized into verb-complement compounds, verb-complement compact structures, verb-complement loose structures, and verb-complement phrases. The study compares the processing similarities and differences between the four types of structures with and without inter-component spacing in a behaviour experiment. The results showed that the processing of verb-complement compact structures closely resembles that of words, while the processing of loose structures embodies characteristics of both compounds and phrases, yet differs from both words and phrases. This study demonstrates that based on the degree of internal expansion, separable words can be further classified into subcategories, existing in a transitional state between words and phrases, forming a continuous continuum with compounds and phrases.