Metroxylon sagu vs true sago palm

Metroxylon sagu and true sago palm both are nouns.

Word	Noun	Adjective	Verb	Adverb
Metroxylon sagu	Yes	No	No	No
true sago palm	Yes	No	No	No

As nouns, Metroxylon sagu and true sago palm are synonyms defined as:

Metroxylon sagu and true sago palm: Malaysian palm whose pithy trunk yields sago--a starch used as a food thickener and fabric stiffener; Malaya to Fiji

Metroxylon sagu (noun)	true sago palm (noun)
Malaysian palm whose pithy trunk yields sago--a starch used as a food thickener and fabric stiffener; Malaya to Fiji	Malaysian palm whose pithy trunk yields sago--a starch used as a food thickener and fabric stiffener; Malaya to Fiji