"rough distinction" is a correct and usable phrase in written English.
It means a general or approximate difference or division between things. Example: While there are many similarities between the two cultures, there is a rough distinction between their traditional beliefs and values.
When this rough distinction between derivation and inflection is made more precise, problems occur.
For Yang, this rough distinction also provides a useful way of explaining China's post-Mao evolution.
Apart from this rough distinction, it is very hard to recognise any more detailed pattern by which to organise the district's bodies.
Based on the principle of "objective and object suitability", the socio-scientific research allows us to make a rough distinction between variable-manipulative and variable-configurative strategies as illustrated by the diagram below (see Fig. 1, modelled on Schaffer [4]).
Fodor (1983) proposed a view of our overall cognitive architecture that rested on a rough distinction between input systems, or relatively rigid computational "modules" that are designed to pick up specific types of information, and more flexible central processors that integrate that information in various ways.
At 33 hpf, the anterior region of the heart tube, the future ventricle, has jogged to the right, allowing a rough distinction between the two future chambers and the future AVC.
There are many species of each view, but the rough distinctions come to this.
Although civil disobedience often overlaps broadly with other types of dissent, nevertheless some rough distinctions may be drawn between the key features of civil disobedience and the key features of these other practices.
Despite these difficulties, some rough distinctions can be drawn: the difference between seeing red and seeing blue is not a difference in how things sound, or in how one's body feels.
However, because the genders are also associated with rough semantic distinctions of shape (masculine with long, narrow objects and feminine with short, broad, round objects), specificity, and countability, inanimate nouns may be more naturally assigned to one rather than the other gender.
Without going into a more detailed description of the landscape of the battlefield of the foundations of statistical physics, or a sketch of the various positions occupied, it might be useful to mention only the roughest of distinctions.
