し～し～ y ～, Así que, Como ～ y ～, Dando razones (Lista no exhaustiva)

Both give reasons, but the structure and emphasis differ. ことだし presents a reason as a settled or obvious circumstance that naturally justifies a decision, often sounding calm and explanatory, as in 雨も降っていることだし、今日は家にいよう ('Since it’s raining anyway, let’s stay home today.'). By contrast, し～し lists multiple reasons side by side, emphasizing accumulation rather than inevitability, as in 雨だし寒いし、出かけたくない ('It’s raining and cold, so I don’t want to go out.').

じゃあるまいし is a combination of the まい form that is equivalent to ないだろう and し used to list reasons. Technically, it could be rephrased as じゃないだろうし, or even simply じゃないし for a more direct way of expressing the sentiment of 'You're/It's not (A), so...', e.g. 子どもじゃあるまいし ('You're not a child, so...').

し～し enumera múltiples razones, de forma similar a 'por A y por B, etc.' en español. En cambio, Adjetivo + て + B simplemente conecta adjetivos entre sí. Aunque a veces puede dar a entender que el primer adjetivo es la razón del segundo (p. ej., 甘くておいしい ('dulce y delicioso' [dulce y (por causa de eso) delicioso]), no tiene mayor connotación. し a menudo sí la tiene, como en 甘いし、おいしいし, con el significado de 'Es dulce y es delicioso… (y por eso me gusta)'.

Tanto し～し como から expresan causa o razón, de forma similar a 'porque' en español. A la razón se le agrega detrás し～し o から. La principal diferencia es que から destaca una única razón, mientras que し～し enumera múltiples razones. Incluso cuando aparece solo con una razón, し sugiere que hay otras razones no expresadas o implícitas.

し～し and とか～とか both list things, but with a different nuance. し～し lists reasons or causes, like 'because of things like (A) and (B)'. とか～とか simply lists items without implying they are a cause for something else, i.e. 'things like (A), (B), and so forth'. Also, とか～とか is very casual, while し～し will be found in both speech and writing.

Both forms can express reasons, but their usage differs. Verb[て] + B shows that the stated action is the direct reason for what follows, while し～し implies that multiple reasons exist, even if only one is mentioned. For example, 犯人が捕まって安心です ('I'm relieved because the criminal was caught.') vs. 犯人が捕まったし、安心です ('The criminal was caught, and I'm relieved.'), where the し version suggests there may be other factors for the relief.

Tanto し～し como ので expresan causa o razón, de forma similar a 'porque' en español. A la razón se le agrega detrás し～し o ので. La principal diferencia es que ので destaca una única razón objetiva, mientras que し～し enumera múltiples razones y suele tener un sentido más personal o subjetivo. Incluso cuando aparece solo con una razón, し sugiere que hay otras razones no expresadas o implícitas.

上に (literally, 'on top of') can be used as a slightly formal way to express 'in addition to (A), (B)', e.g. 安い上に、美味しい ('In addition to being inexpensive, it's tasty.'). While し～し is similar in that it lists multiple things, it specifically does so in the context of giving reasons for something, e.g. 安いし、美味しいし、一番好きなお店です ('It's inexpensive, it's tasty too, and so it's my favorite shop.').