志向【しこう】
intention, aim, preference (for), orientation (towards a goal)
同志【どうし】
like-mindedness, (being of the) same mind, shared sentiment, comrade, fellow, kindred soul
志願【しがん】
aspiration, volunteering, desire, application
有志【ゆうし】
interested person, volunteer, supporter
志望【しぼう】
wish, desire, ambition, choice
意志【いし】
will, volition, intention, intent, determination
志す【こころざす】
to plan, to intend, to aspire to, to set aims (sights on)
篤志家【とくしか】
charitable person, philanthropist, volunteer, supporter