だってI heard/was said, Because, But, Even or also, Even if or even though

While they both can be used to state hearsay information, there are differences in their usage and nuances. "ということだ" is more formal and distant, often used when we state something based on the information we received from others, or clarify the meaning of something. On the other hand, "だって" is more informal and intimate, and can not only deliver secondhand information but also indicate a reason or contradiction, or express inclusiveness or concession in different contexts.

While both ときいた and だって can suggest that information has been heard or relayed from another source, they have different nuances. ときいた specifically indicates that the speaker has heard a particular piece of information from someone else, giving a hearsay nuance. On the other hand, だって is more versatile. Besides implying hearsay, it can also imply an informal, colloquial tone and show contradiction, reason, or emphasis, like "even", "but", or "because". It also allows for expressing defiance or surprise.

The expression んだって is commonly used to provide information the speaker has heard from someone else, which can be translated as "I've heard that" or "he/she said that." On the other hand, だって has more diverse usages. It can indicate reason or cause when it can be translated as "because," introduce a contradictory statement or recount information, equivalent to "but" or "I heard/was said", or express emphasis or inclusivity translating to "also" or "even."

だって and それでも are two Japanese expressions that both convey a sense of contrast or contradiction, but they are used in slightly different ways. だって is more versatile and can mean 'I heard/was said, Because, But, Even,' or 'also, Even if or even though,' depending on the context, often used to explain reasoning behind something or present a contrary opinion. On the other hand, それでも specifically means 'But still, And yet, Even so, or Nevertheless,' and is used when the speaker wants to emphasize persistence or determination despite certain circumstances or outcomes.

The grammar point だって is used more colloquially and has a broader range of meanings depending on the context, which can include 'I heard', 'because', 'but', 'even', 'also', or 'even though'. On the other hand, なぜなら〜から is used mostly in formal or written language and is more specifically used to provide a reason or explanation for something, translating as 'because', 'the reason is', or 'that is because'.

"だって" in Japanese is versatile and can be used to indicate reasons or causes ("because"), to introduce something quoted or what the speaker heard, and to introduce a contradiction ("but"). It can also indicate emphasis ("even" or "also"). On the other hand, "たって" is generally used for hypothetical or contrary conditions. It often emphasizes the insistence, determination, or inevitable results regardless of certain circumstances ("even if" or "even though").