Blue Letter BibleThe Lexiconc is an easy way to find the Greek and Hebrew terms for words you're interested in. For example, if you run a Lexiconc search for LOVE, the BLB will return a list of Hebrew words (Old Testament) that are sometimes translated as "love" followed by a Greek (New Testament) list of the same.
Tutorial:
https://www.blueletterbible.org/help/lexiconc.cfm