As stated above, ARMv# refers to the CPU architecture.
HVGA, QVGA refers to the screen resolutions. HVGA (aka half VGA) is 480x320 and QVGA (aka quarter VGA) is 320x240.
W friendly is new. But I am assuming the same thing. Maybe allows for landscape screen orientation. Though it might keep proper aspect ratio of 4:3 and give black bars on each side of the screen. Unless it supports widescreen resolution or stretches and fills the screen (which ideally you wouldn't want).