hvsHRWhat's the difference?

Quick tell: h is a character, HR is a noun, so they fill different roles in a sentence.

Which to use

“h” is a character and “HR” is a noun - they look or sound alike but fill different roles in a sentence.

#926
“h” frequency rank
#5,134
“HR” frequency rank
6060
confusion score

Side-by-Side Comparison

Feature h HR
Definition The eighth letter of the English alphabet, called aitch and written in the Latin script. Initialism of human resources.

Where the eye mixes h and HR

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

1 ch
h
2 ch
HR

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: h is /eɪt͡ʃ/ while HR is /eɪt͡ʃ ɑː(ɹ)/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “h” sits inside “HR”, and the parts of speech differ too (character vs noun), which is usually the fastest check. Our composite confusion score for this pair is 6060, derived from the frequency rank of both members and their visual similarity.

h is recorded at frequency rank #926, classified as acharacter, pronounced /eɪt͡ʃ/. HR is at rank #5,134, tagged as anoun, pronounced /eɪt͡ʃ ɑː(ɹ)/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 6060, this pair ranks #512,919 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of h vs HR

Shared letters: h. Private to "h": -. Private to "HR": r.

"h" · 1 letters · shape C  ·  "HR" · 2 letters · shape CC

Frequently Asked Questions

Can "h" and "HR" be used interchangeably?
No - they are not even the same part of speech. "h" is a character and "HR" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "h" or "HR"?
"h" is the more common of the two: it sits at frequency rank #926 in our English list, against #5,134 for "HR". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list