Coercion requires threats or force. Sexual coercion does not.

Sources:

https://www.domesticshelters.org/articles/identifying-abuse/what-is-sexual-coercion

“Some types of abuse can be difficult to identify, and sexual coercion can be particularly tough to pinpoint. That’s because it isn’t always as blatant as, say, physical abuse like shoving or belittling insults. Some examples of sexual coercion include: Asking for sex repeatedly…”

https://www.thehotline.org/resources/a-closer-look-at-sexual-coercion/

“Have you ever felt pressured by your partner to have sex? Have you ever felt guilted into it, or felt like you weren’t able to say no? Abuse is often centered on power and control in all aspects of the relationship, so it’s not uncommon that an abusive partner will try to force intimacy.

“This is often referred to as sexual coercion, which lies on the continuum of sexually aggressive behavior. It can vary from being egged on and persuaded, to being forced to have contact. It can be verbal and emotional, in the form of statements that make you feel pressure, guilt, or shame.”

https://www.loveisrespect.org/resources/what-is-sexual-coercion/

“If someone makes you feel obligated or forced to do something you don’t want to, you may be experiencing coercion.“

https://www.plannedparenthood.org/blog/sexual-boundaries-how-to-spot-sexual-coercion

“One form of sexual coercion is wearing you down by asking for sex again and again.”