is a specific kind of: flower.

is a broader term that covers: moss campion, Silene acaulis | Silene caroliniana, wild pink | Lychnis dioica, red bird's eye, red campion, Silene dioica | bladder campion, evening lychnis, Lychnis alba, Silene latifolia, white campion, white cockle | fire pink, Silene virginica | bladder campion, Silene uniflora, Silene vulgaris.

is a member of: genus Silene.