How to Say "subjects" in Spanish
The most common Spanish word for “subjects” is “temas” — use 'temas' when referring to academic subjects, areas of study, or topics of discussion..
temas
TEH-mahs/ˈte.mas/

Examples
Necesitamos discutir los temas más importantes de la agenda.
We need to discuss the most important topics on the agenda.
El libro aborda temas complejos como la migración y la identidad.
The book addresses complex themes like migration and identity.
Hay muchos temas que me interesan en esa conferencia.
There are many subjects that interest me at that conference.
Masculine Noun Ending in -a
Even though 'tema' ends in -a, it is a masculine word. Remember to use masculine articles and adjectives: 'los temas' and 'temas importantes', not 'las temas'.
Using the Feminine Article
Mistake: “La temas son difíciles.”
Correction: Los temas son difíciles. (Use 'los' because 'tema' is masculine.)
sujetos
soo-HEH-tohs/suˈxetos/

Examples
Los sujetos de la investigación deben firmar este formulario.
The subjects of the investigation must sign this form.
Había dos sujetos sospechosos merodeando por la calle.
There were two suspicious characters loitering on the street.
Los sujetos activos en la economía son los consumidores y las empresas.
The active parties in the economy are consumers and businesses.
Masculine Plural Noun
This word is the plural form of 'sujeto' (a person or subject). Use it to refer to multiple people, especially in official language.
Confusing Noun and Adjective
Mistake: “Using 'estos sujetos están sujetos' to mean 'these people are held' (redundancy).”
Correction: While grammatically correct, it sounds repetitive. Try 'Estas personas están atadas' (These people are tied/held).
casos
KAH-sohs/ˈkasos/

Examples
Los abogados están manejando varios casos de fraude.
The lawyers are handling several cases of fraud.
El hospital reportó cinco nuevos casos de la enfermedad.
The hospital reported five new cases of the illness.
Formal Context
When used formally, 'casos' implies a serious investigation or formal record, especially when discussing law, medicine, or science.
Subjects vs. Topics
Related Translations
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