How to Say "faults" in Spanish
The most common Spanish word for “faults” is “errores” — use 'errores' when referring to mistakes, errors in judgment, or technical defects in something..
errores
eh-RROH-rehs/eˈroɾes/

Examples
El coche tiene algunos errores de diseño.
The car has some design faults.
El profesor encontró muchos errores en mi ensayo.
The teacher found many mistakes in my essay.
Todos cometemos errores, es parte de aprender.
We all make mistakes, it's part of learning.
Los errores de cálculo costaron a la empresa una fortuna.
The calculation errors cost the company a fortune.
Plural Form
This word is the plural form of the masculine noun 'error'. Since 'error' ends in 'r', you add '-es' to make it plural.
Gender Consistency
Because 'error' is masculine, its plural 'errores' is also masculine. Always use masculine articles with it: 'los errores' (the mistakes).
Using the wrong verb for 'making' a mistake
Mistake: “Hacer errores”
Correction: Cometer errores. In Spanish, you usually 'commit' (cometer) a mistake, rather than 'do' or 'make' (hacer) one.
pecados
peh-KAH-dohs/peˈkaðos/

Examples
La falta de puntualidad es uno de mis pequeños pecados.
Lack of punctuality is one of my little faults.
El sacerdote habló sobre los siete pecados capitales.
The priest spoke about the seven deadly sins.
Todos cometemos pecados de vez en cuando; nadie es perfecto.
We all commit faults (or make mistakes) from time to time; nobody is perfect.
Sus pecados del pasado le persiguieron toda la vida.
His past transgressions haunted him all his life.
Plural Noun Rule
Since 'pecado' ends in a vowel ('o'), you make it plural by simply adding '-s' to the end: 'pecado' becomes 'pecados'.
Confusing Noun and Verb
Mistake: “Using 'pecados' when you mean 'we sin' (pecamos).”
Correction: 'Pecados' is the thing (the sin). The action is 'pecar' (to sin). If you want to say 'We sin,' you use the verb form: 'Nosotros pecamos'.
Errores vs. Pecados
Related Translations
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