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"Entenderse" is a reciprocal verb which is often translated as "to understand each other", and "es bueno que" is a phrase which is often translated as "it's good for". Learn more about the difference between "entenderse" and "es bueno que" below.
entenderse(
ehn
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tehn
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dehr
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seh
)A reciprocal verb is a verb that indicates that two or more subjects perform an action on each other (e.g., Ellos se abrazan.).
a. to understand each other 
Mis padres se entienden mejor que cualquier otra pareja.My parents understand each other better than any other couple.
A pronominal verb always uses a reflexive pronoun. (e.g., Te ves cansado.).
a. to have an affair with 
Dicen que se entendía con el jardinero.They say she was having an affair with the gardener.
entender
A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
a. to understand 
Mi hija entiende a los perros mejor que cualquier otra persona en casa.My daughter understands dogs better than anyone else at home.
a. to understand 
Como hablo español, puedo entender el portugués escrito.Since I speak Spanish, I can understand written Portuguese.
a. to understand 
No entiendo tu enfado, solo dije que no quería salir esta noche.I don't understand why you're annoyed. I only said that I didn't want to go out tonight.
8. (to trust)
a. to believe 
Entiéndeme cuando te digo que no quise herir tus sentimientos.Believe me when I tell you I didn't mean to hurt your feelings.
9. (colloquial) (to be of the opinion that)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
a. to think 
Entiendo que es mejor irnos por la mañana para evitar tráfico.I think that it's better if we leave in the morning to avoid traffic.
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
b. to understand about 
Mi hermana entiende más de ingeniería que yo.My sister understands more about engineering than I do.
a. to hear 
El juez Rodríguez entendió en el caso del infame asesino en serie.Judge Rodríguez heard the case of the infamous serial killer.
12. (to comprehend)
a. to understand 
No entiendo. ¿Por qué se quieren mudar? Pensé que eran felices aquí.I don't understand. Why do you want to move out? I thought you were happy here.
An intransitive verb phrase is a phrase that combines a verb with a preposition or other particle and does not require a direct object (e.g., Everybody please stand up.).
13. (slang) (to be homosexual) (Spain)
A very informal word or phrase used by a particular group or community as a substitute for standard language (e.g., joint, john).
Regionalism used in Spain
a. to be gay 
Si entiendes, puedes pasar. Este es un bar solo para gays.If you're gay, you can come in. This is a gay-only bar.
es bueno que(  
ehs
bweh
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noh
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. it's good for  (statement form)
Ya sé que odias la lluvia, pero reconocerás que es bueno que llueva, al menos de vez en cuando.I know you hate the rain, but you must admit it's good for it to rain, at least from time to time.
b. is it good for  (question form)
¿Es bueno que los niños empiecen a ir a la guardería a una edad temprana?Is it good for children to start going to the daycare center at an early age?
c.  no direct translation (negative form)
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Yo creo que no es bueno que dependas tanto de él.I don't think it's good for you to depend so much on him.
No es bueno que los perros pasen demasiado tiempo solos.It isn't good for dogs to spend too much time on their own.