Species within a genus

coerula, = the sea, the blue surface of the sea;
caeruleum, = a blue colour, steel colour;
-escens, = indicates process of becoming, hence not fully achieved resemblance, often expressed by the termination ‘-ish’.
(ld, BL)

hirtus, hirsus, = rough, hairy, shaggy;
-utus, = indicates possession.
hirsutus, = rough, shaggy, bristly, prickly, hirsute.
(hirsute, covered with fairly coarse and stiff long erect or ascending straight hairs)
(ld, BL)