After running vcf-stats on a vcf file I get terms like:

    'snp_count',
    'private',
    'hom_AA_count',
    'hom_RR_count',
    'ref_count',
    'count',
    'unphased',
    'het_RA_count',
    'ref',
    'indel_count'

`snp_count` should be the number of snps, and `indel_count` is the number of indels. Private from googling appears to be number of SNPs (or maybe variants) exclusive to a sample in a multi-sample SNP. However, what do the rest of them mean? What is the difference between `ref` and `ref_count`?
From a few months ago: https://www.biostars.org/p/83558/