If you have dealt with an injury before, or if you are an individual in the profession of healthcare, you have heard the word โ€œtendonโ€ with various endings after the root of this word, whether it be โ€œtendinosisโ€, โ€œtendinitisโ€, โ€œparatenonitisโ€, โ€œtenosynovitisโ€ or โ€œtendinopathyโ€. The terminology behind various tendon conditions is inconsistent in the realm of healthcare, which can lead to confusion for patients and even misdiagnoses by practitioners! In all actuality, does this really matter? For example, think about the Achilles tendon. Will treatment change if someone has an Achilles tendinitis versus an Achilles tendinosis? The answer is YES! Moreover, it is extremely important for individuals to not only receive the correct diagnosis from a healthcare professional but also understand the role they must play in helping facilitate an optimal healing process! In this article, we will review the important differences between tendinitis versus tendinosis, why these differences are important to understand, and evidence-based treatment strategies for these conditions.