Jam-pack and Zero in

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

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

Zero in verb - Direct onto a point or target, especially by automatic navigational aids.

Jam-pack and zero in are semantically related. Sometimes you can use "Jam-pack" instead a verb "Zero in".