Regarding FAD is Dinucleotide even if only single nucleotides is in the structure. Requesing reason?

[Thakkar Taniya]

Rexpected mam,

In below lecture 20 of week 9 https://youtu.be/-O2pjm9ZO1Y

FAD as seen in the screenshot has only 1 nucleotide than y is it called dinucleotide?

While nicotinamide has 2 nucleotide as seen in another image highlighted in yellow color. So it is understood that in it's name there is "di"nucleotide. However, what is the reason FAD is "di" nucleotide?? Please help me with my query mam.

I would be waiting to hear from you.

Sincerely, 

Taniya