がBut, However

ものの expresses contrast, similar to 'although' in English, showing that while one thing is true, another contradicts it. が also expresses contrast, but its nuance is weaker, and in some cases, it merely introduces a statement without implying contrast. が is more general, while ものの is more specific. Both are formal and more common in writing than in casual speech.

Both が and けれども express contrast, similar to 'but' in English, or sometimes simply indicate a transition to added information (like 'and'). Both are somewhat formal, used in writing or formal speech, compared to the casual けど. Note that while が and けれども follow immediately after verbs or い-Adjectives, だ or です is required after a な-Adjective or noun.

The particle が in both patterns expresses contrast, similar to 'but' in English, or sometimes indicates a transition to additional information (like 'and'). The difference is that が follows directly after an い-Adjective or verb, while it requires だ or です after a な-Adjective or noun. が is somewhat formal and often used in writing or formal speech.

Both が (or だが/ですが after a noun or な-adjective) and けど・だけど express contrast or transition, similar to 'but' in English (e.g., '見た目は美味しそうだけど、味がない' = 'It looks tasty, but has no flavor'). The difference is that が is more formal or written-style, while けど is more colloquial. Both can also be used at the end of a sentence to suggest an implied contrast, even if not explicitly stated.

Both express contrast, but が is more formal and used in writing, like 面白いが難しい ('It's interesting, but difficult'). When combined with ～んだ・～んです, as in 行きたいんですが, it softens the sentence and invites a response or action from the listener.

Both ところが and が express contrast or contradiction. ところが is used at the beginning of a sentence to emphasize a contrast between expectation and reality. In contrast, が is used after a phrase or at the end of a sentence to express simple contrast, or sometimes to add information or context without implying surprise or expectation.

くせに expresses disapproval, similar to 'in spite of' or 'although' in English. In contrast, が is a neutral connecting particle, often expressing contrast (like 'but') or adding information (like 'and'). Unlike くせに, which carries a negative nuance, が is neutral. After な-Adjectives and nouns, くせに requires な or の, while が requires だ or です.