In this episode of the Business English Podcast, the hosts explore the subtle yet significant differences between the adverbs "plausibly" and "probably." While both suggest a sense of likelihood, "plausibly" conveys a sense of reasonableness or logical possibility, making it ideal for formal situations like presentations. In contrast, "probably" indicates a stronger likelihood and is better suited for casual conversations. The hosts provide examples and engage in a role-play to highlight these nuances, stressing the importance of selecting the right adverb to improve communication effectiveness and professionalism. They also touch on the related adjectives "plausible" and "probable," discussing how they pair with different auxiliary verbs.