Jam-pack and Top off

Jam-pack verb - To put into (something) as much as can be held or contained.

Top off and jam-pack are semantically related in crowd topic. In some cases you can use "Top off" instead a verb phrase "Jam-pack".

Top off verb - Fill to the point of almost overflowing.

Jam-pack and top off are semantically related in cram topic. You can use "Jam-pack" instead a verb "Top off", if it concerns topics such as fill, to put in and occupy the whole of.