«لَا يَتَيَسَّرُ الْكَلَامُ فِيهِمَا إِلَّا بِتَرْكِ التَّحْقِيقِ وَالتَّعْيِينِ»
It is difficult to discuss the two without setting aside exact determination.
The remark concerns the variable measure of expression. A universally fixed number of words for every purpose, audience and setting would be unrealistic. Comparison therefore invokes context and usage.
A further issue remains open: does the fact that a concept is relative really prevent its meaning from being defined with precision? The subsequent discussion tests this inference.