Difference between قَلْب and فُؤاد

Sr Haniya wrote:

Assalamu Alaikum wa Rahmatullahi wa Barakatuhu

Surah Qasas Ayah 10

وَأَصْبَحَ فُؤَادُ أُمِّ مُوسَىٰ فَارِغًا ۖ إِن كَادَتْ لَتُبْدِي بِهِ لَوْلَا أَن رَّبَطْنَا عَلَىٰ قَلْبِهَا لِتَكُونَ مِنَ الْمُؤْمِنِينَ – 28:10

And the *heart* of Moses’ mother became empty [of all else]. She was about
to disclose [the matter concerning] him had We not bound fast her *heart*
that she would be of the believers.

Two words used in the above ayah – فُؤاد and قَلبْ
Both translated as heart. What’s the difference between the two?? Read more»