In a machine learning interview, answer the questions in detail and try to explain the topic in layman terms. If an interviewer asks you to explain the difference between supervised learning and unsupervised learning. Explain him in layman terms in this manner.
In supervised learning, you have a basket full of different fruits and you know the names of fruits. We will identify as an apple if the fruit is red in color, size is large and round in shape. We will identify as a cherry if the fruit is red in color, size is small and round in shape. In Unsupervised learning, for the same example we do not know the names of the fruits. We identify that first category as large red color fruit and the second category as small red color fruit.
I would suggest to check out this blog on Machine Learning Interview Questions that cover FAQs with a better explanation.
You can watch this video on Machine learning Interview questions to get ready for your ML interview: