having very little difference between one another; being much of a muchness; being more or less the same; pointless competition (between two equally unimpressive parties); pissing contest
Chinese soft-shelled turtle (Pelodiscus sinensis); soft-shelled turtle (Trionychidae)
acorn woodpecker (Melanerpes formicivorus)
acorn squash (Cucurbita pepo var. turbinata)