The word is clutch. Note that this is a verb and a noun at the same time.
The word you are looking for is "density". Density refers to how tightly packed the matter in a substance is.
"Observe" means to watch something happen.
Squeezing refers to applying pressure or force to compress or tighten something. It can also involve extracting or extracting something with difficulty.
The word that means to search through something by moving things around is "rummage."
The word you are looking for is "visible." Something that is visible can be seen with the eyes.
grip
grip hold
The word is "grip".
grip or cling
Grip
One possibility is grab.
Grasp, clutch
grip or grab
grab
grip
Some words that mean "seize" or "hold firmly" are:gripclutchgraspclaspclench
The word that means 'stretched tightly' is taut.