An Analyst is typically an entry-level position responsible for data collection, analysis, and generating reports under the guidance of senior team members. In contrast, a Senior Analyst has more experience, expertise, and responsibility. Senior analysts have a deeper understanding of complex analytical techniques and earns high wages when compared to analyst.
If you are planning to get into analytics domain then check out this video on how Manjunathareddy became a Senior Analyst with a good salary hike just after completing Intellipaat's Data Analytics For Business Program.