Let's talk more about stress! When there is no accent mark and a word ends in a vowel, n, or s, the emphasis goes to the second‑to‑last syllable.
But! If there is no accent mark and a word ends in a consonant (other than n or s), the last syllable is stressed.
There's a difference between n and ñ! A Spanish n is pronounced the same as the letter n in English.
But ñ is a little tricky! It almost sounds like ny in “canyon”.