pineweed vs nitweed

pineweed and nitweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
pineweed	Yes	No	No	No
nitweed	Yes	No	No	No

As nouns, pineweed and nitweed are synonyms defined as:

pineweed and nitweed: annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers

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

pineweed (noun)	nitweed (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