Jen took both the concept of pillowyness and the concept of woodenness (both of which shall be referred to as plwy and wdny respectively from now on) from the end table, leaving a dull grey, presumably inflammable "end table - wdny", or an end table of futility, if you wanted to get creative. Jen wasn't quite sure what it was made of exactly, but guessed that it would be futile to try and figure out.
Jen took the wdny, which looked like a log of generic wood and pushed it into the plwy, making sure to close her eyes this time. The result was the same cartoony picture of wood but with frills on the end. Plwy frills.
Jen took the "Plw+Wdn"y over to the pillow she had accidentally deformed earlier and merged them with each other, once again closing her eyes. The result was the same pillow, still deformed, but now able to be squished again. Also it appeared to be made out of wood, and likely was.
Jen deemed it a wooden pillow of indentation before taking it over to the end table of futility merging the too. Or she would have, had the pillow not gotten caught on the top of the table and expanded to cover its surface ("(pillow + wdny) * (end table - wdny)", attachment is denoted as multiplication). Jen closed the lips of her muzzle and managed the best smile she could with a mouth full of tongues, "Now we're getting somewhere", she thought to herself.
Jen looked at what she had created and decided that it was a cushioned wooden stool. Most definitely. It seemed that attempting to merge two objects instead causes them to attach to each other in the most appropriate way.