Plural of assistance; multiple instances of helping or aid given to someone.
From Latin 'assistere' (to stand by or help) plus '-ance' (state or quality), then pluralized. The root 'ad-' (to) plus 'sistere' (to stand) literally means 'to stand beside.'
The etymology is beautiful: help literally means 'standing beside' someone, which is why the word has kept its meaning for over 1,000 years—the metaphor of companionship in difficulty is just that powerful.
Complete word intelligence in one call. Free tier — 50 lookups/day.