Drop down and Plunk down

Drop down verb - Fall or descend to a lower place or level.

Plunk down and drop down are semantically related. In some cases you can use "Plunk down" instead a verb "Drop down".

Plunk down verb - Set (something or oneself) down with or as if with a noise.

Drop down and plunk down are semantically related. Sometimes you can use "Drop down" instead a verb "Plunk down".