介助 is read as かいじょ (kaijo) and means help.
かいじょ
kaijo
かいじょしゃ
aide
かいじょけん
service dog (for the disabled, etc.)
ぜいんかいじょ
full assistance (for a disabled or elderly person)
かい
shellfish
かいにゅう
intervention
かいざい
existing (between)
かいする
to use as an intermediary
かいして
through the medium of
かいにゅうけんきゅう
intervention study (epidemiology)
かいい
worrying about
ほじょ
spotting (in weight training)
ぎょうむほじょ
internship (of a certified public accountant)