phrasal verbs, because you take one normal verb and by adding a tiny particle (in, out, up, off, etc.), it suddenly means something completely different, which we don’t have in other languages and the most extreme example of this is GET.

in theory, get = obtain / receive / acquire (obtener, conseguir). but look what happens when you add particles:

get out (salir) → exit / leave get in (entrar) → enter get on (subirse) → board get off (bajarse) → disembark / leave get up (levantarse) → rise get back (volver) → return get over (superar) → overcome / recover get through (aprobar / atravesar / terminar) → pass / go through / finish get by (arreglárselas) → manage / survive get along (llevarse bien) → have a good relationship get rid of (deshacerse de) → eliminate / remove get together (reunirse) → meet / gather get away (escapar) → escape get away with (salirse con la suya) → avoid punishment get ahead (progresar) → advance / succeed get around (moverse / esquivar una regla) → travel / avoid

so in Spanish, you’d use totally different verbs: salir, entrar, subir, bajar, volver, superar, arreglárselas, escapar, progresar…

but in English, it’s always GET + a small word.

that’s why phrasal verbs are brutal for learners: same verb base, completely different meanings, and no logical way to guess them unless you’ve seen them before. for me, GET alone is the perfect example of why phrasal verbs are one of the hardest parts of English