Consonance
Etymology
From Latin "consonantia" ("harmony of sound"), from "con-" (together) and "sonare" (to sound). It moved from describing pleasing musical intervals to naming both figurative agreement and the literary sound device.
noun · /KON-suh-nunss/
Agreement or harmony — and, in poetry, the repetition of consonant sounds, especially at the ends of words.
What it names
Names both a general sense of things fitting together and the specific sonic device that gives verse its knit-together music.
Example
The line "the lumpy, bumpy road" leans on consonance to make you feel every jolt.
Related idea
Assonance repeats vowel sounds ("light my fire"); consonance repeats the consonants around them.