This is a Closed Compound Word ( A single non hyphenated or non seperated word made of 2 seperate words).
Made up of 2 words say A and B
When reversed it is also a closed compound word. So both AB and BA are closed compound words.
The word AB results from the word BA
It has 5 consonants.
Words only from a standard Webster or Oxford dictionaries please. No proper nouns or slang words.
It is a simple word so please do not go to computers and check all compound words!
There may be 2 solutions. Second one a little stretched.
Hint
It fills the blanks in the following
That ________ must have come from a _______.
For the second solution
They make them do a lot of ________ in that ________.