However...
However, some exegetes maintain that there is a difference between the twain such that the former connotes that one may never find the right path toward one's destination but the latter connotes that one proceeds on a path but his path happens not to be straight and free from error. The former is like "disbelief" and the latter resembles committing sins and transgressing the bounds.
It is worthy of note that in his Mufradat under gh-y-y, Raghib says that the latter signifies "ignorance accompanied by corrupt belief." Thus, dhalala designates absolute ignorance but ghawaya signifies ignorance accompanied by false belief. However, in this blessed Verse, God Almighty intends to negate any form of error and ignorance from His Messenger (S) thereby repudiating the false accusations ascribed to him by his enemies.
Surah al-Najm - Verses 3-4 وَمَا يَنطِقُ عَنِ الْهَوَی إِنْ هُوَ إِلاّ وَحْيٌ يُوحَی 3. Nor does he speak of concupiscent desire. 4. His word is only a Revelation revealed to him. The words of the Noble Prophet (S) arise from neither personal desires nor social milieu. Thus, the blessed Verses in question say that the Noble Prophet (S) does not speak of concupiscent desires but he merely imparts Divine Revelation.
In this respect, he is different from common people who speak out of their natural inclinations and concupiscent desires, rather his words arise from the Noble Prophet's (S) heart connected to the higher world. In this vein, a number of traditions will be quoted.
The late scholar, Saduq in his Amali narrates a tradition according to which the Noble Prophet of Islam (S) turned to people after early and late evening prayers saying: "A star (light) will descend upon the house of one of you at day break and the owner of the house will be my successor." All people were awaiting the descent at day break. Ibn ‘Abbas is quoted as saying that his father, the Noble Prophet's paternal uncle, was most eager to see upon whose house the star will descend.
However, it descended upon the house of Imam ‘Ali (as) and the Noble Prophet (S) said: "O ‘Ali!