Which features of Basque spelling are similar to Spanish spelling?

Basque orthography shares several notable similarities with the Spanish norm, particularly regarding the representation of specific palatal and nasal sounds.1

Key features of Basque spelling that align with Spanish include:

• Palatal sounds: The use of ñ to represent the nasal palatal sound (similar to the ny in the English word "canyon") and ll to represent the palatal lateral sound (similar to the lli in "million") follows the Spanish convention.1
• Consonant representation: The system for representing stopped consonants—using b, d, g for voiced stops and p, t, k for voiceless stops—is consistent with the Spanish norm.1
• Rhotics: Basque uses r to represent a single tap of the tongue and rr to represent a rolled or trilled sound, mirroring the distinction found in Spanish spelling.1

While these orthographic conventions coincide with Spanish, Basque also utilizes unique combinations, such as z, tz, s, ts, x, and tx, to distinguish between various types of sibilants and hushing sounds.1