Trill Maybe? and Tremolo Picking

Hey guys I wanted to settle any doubts on trilling and tremolo. The first part is what I think is a trill. I think the Pentatonic runs are also trills since I dont pick them at first. I also believe the last part contains some tremolo picking.

the beginning is the definition of trills.

no, thats legato.. trills have the same note played three times.. i think... maybe im dumb tho =p