The opposite of tongue could be palate or roof of the mouth.
tickle the tongue
hard palate, under the tongue is soft palate
The palate is the collection of taste buds on your tongue, and it's what gives you the ability to taste things.
Most are located on the dorsal surface of the tongue. A few are found on the soft palate, epiglottis, pharynx, and inner surface of the cheeks.
The word "tongue" is pronounced as "tuhng." The "ng" sound is created by the back of the tongue and the soft palate.
The hard part of the palate is called the hard palate. If you move your tongue to the back and begin feeling a softer part that still feels boney, it's called the velum, or soft palate.
A palatoglossus is a small fleshy fasciculus, narrower in the middle than at the end, arising from the anterior surface of the soft palate and passing into the tongue.
The skin that is attached to the tongue and lower palate is called the lingual frenulum.
the roof of your mouth... like the top part opposite your tongue
The palate - is the roof of the mouth. It's divided into two sections - the hard palate at the front, which is where the teeth are, and the soft palate, which moves when you draw your tongue to the back of your mouth.
Whitish patches can appear on the tongue, inside of the cheeks, or the palate.