inflate

flocking to form something by forcing or pushing it out…

crossing the act of traversing or traveling across…   crossing →

fracture to break or cause to break...

connect to associate or relate (something) in some respect…   connect →

interlock to fit together firmly...

pull to draw or haul toward oneself or itself, in a particular direction, or into a particular position…

taper to become gradually narrower at one end, or to make something do this...