love line vs heart line

love line and heart line both are nouns.

Word	Noun	Adjective	Verb	Adverb
love line	Yes	No	No	No
heart line	Yes	No	No	No

As nouns, love line and heart line are synonyms defined as:

love line and heart line: a crease on the palm; palmists say it indicates your emotional nature

Other synonyms of love line include line of heart, mensal line.

love line (noun)	heart line (noun)
a crease on the palm; palmists say it indicates your emotional nature	a crease on the palm; palmists say it indicates your emotional nature