What is the difference between impact factor and h-index, and how do they compare in measuring the influence and significance of scholarly publications?

The impact factor measures the average number of citations received by articles in a journal, while the h-index measures the productivity and impact of a researcher's work. Impact factor is more focused on the journal's reputation, while the h-index is more focused on the individual researcher's influence. Both metrics are used to evaluate the significance of scholarly publications, but the h-index provides a more comprehensive view of an individual's impact over time.