Tiger moth and Tiger-moth

Tiger moth noun - Medium-sized moth with long richly colored and intricately patterned wings; larvae are called woolly bears.

Tiger-moth and tiger moth are semantically related. In some cases you can use "Tiger-moth" instead a noun phrase "Tiger moth".

Tiger moth and tiger-moth are semantically related. Sometimes you can replace phrase "Tiger moth" with "Tiger-moth", this phrases are similar.