One of the core practices of insight meditation (Vipassana) is to be mindful of your inner thoughts, like through "noting", and observe them through the lenses of the 3 characteristics. You use one-pointedness concentration (Samadhi) to tune into these thoughts. You can also do Samadhi without Vipassana, as many yogis have, but you cannot do Vipassana without a baseline concentration ability. Some people use mindfulness meditation and Vipassana interchangeably, but it is not entirely accurate, yeah. Mindfulness is only one exercise of the broader insight meditation (Vipassana).