Cardiovascular conditions can often sound similar but refer to very different issues within the heart and circulatory system. Hypotension is when blood pressure is lower than normal, which may lead to dizziness or fainting in some individuals. Hypertension refers to persistently elevated pressure in the arteries, which can strain the heart and damage vessels over time. Arrhythmia describes an irregular heartbeat—either too fast, too slow, or erratic in rhythm—potentially affecting circulation. Tachycardia is a condition where the heart beats faster than normal at rest, often due to stress, fever, or underlying heart problems. Each of these conditions affects how efficiently the heart and blood vessels work together to deliver oxygen and nutrients throughout the body. Understanding the differences helps people recognize warning signs, seek appropriate care, and make informed decisions about heart health.