"I used the marzipan on top of my cake to give it a sweet and smooth feel"
No. It comes from either Hungary or Italy and before that from Persia. The word marzipan is an Italian word describing the container in which sweets (candy) were kept. The link below gives an idea of the history of marzipan.
marzipan
Some people use cocoa powder if they want their marzipan to turn out brown. Green tea can be used for a light shade of green. Some people use food coloring to marzipan in a variety of colors.
Can you use the word concluding in a sentence? Done.
You can use the word Truss in a sentence like this.
Just use it! Or do you mean, can you use the word beheld in a sentence.
How do you use the word decibel in a sentence?What is decibel used for?
Since that is not a word I would not attempt to use it in a sentence.
You just did use the word colonize in a sentence.
You can use the word Terrorist in a sentence as " Muslims are not terrorist ".
use the word puzzlement in a sentence
the word rag in a sentence