pen-tail vs pentail

pen-tail and pentail both are nouns.

Word	Noun	Adjective	Verb	Adverb
pen-tail	Yes	No	No	No
pentail	Yes	No	No	No

As nouns, pen-tail and pentail are synonyms defined as:

pen-tail and pentail: brown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal third; of Malaysia

Other synonyms of pen-tail include pen-tailed tree shrew.

pen-tail (noun)	pentail (noun)
brown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal third; of Malaysia	brown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal third; of Malaysia