pine-weed vs Hypericum gentianoides

pine-weed and Hypericum gentianoides both are nouns.

Word	Noun	Adjective	Verb	Adverb
pine-weed	Yes	No	No	No
Hypericum gentianoides	Yes	No	No	No

As nouns, pine-weed and Hypericum gentianoides are synonyms defined as:

pine-weed and Hypericum gentianoides: annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers

Other synonyms of pine-weed include nitweed, orange grass, pineweed.

pine-weed (noun)	Hypericum gentianoides (noun)
annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers	annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers