Difference between Insensitive and Rude

INSENSITIVE vs RUDE: ADJECTIVE

Lacking civility or good manners
Belonging to an early stage of technical development; characterized by simplicity and (often) crudeness
(of persons) lacking in refinement or grace
Undeveloped or uncivilized; primitive.
Socially incorrect in behavior
Ill-mannered, discourteous, or insulting.
(used especially of commodities) being unprocessed or manufactured using only simple or minimal processes
Hearty, vigorous; found particularly in the phrase rude health.
Undeveloped, unskilled, basic.
Tough, robust.
Obscene, pornographic, offensive.
Bad mannered.
Not finished or complete; inelegant; lacking chasteness or elegance; not in good taste; unsatisfactory in mode of treatment; -- said of literature, language, style, and the like.
Barbarous; fierce; bloody; impetuous; -- said of war, conflict, and the like; as, the rude shock of armies.
Of untaught manners; unpolished; of low rank; uncivil; clownish; ignorant; raw; unskillful; -- said of persons, or of conduct, skill, and the like.
Unformed by taste or skill; not nicely finished; not smoothed or polished; -- said especially of material things.
Characterized by roughness; umpolished; raw; lacking delicacy or refinement; coarse.
Lacking education or refinement.
Vigorous or robust.
Unpleasantly forceful or harsh.
In a natural, raw state.
Crude, unfinished, or made with limited skill.
Violent; tumultuous; boisterous; inclement; harsh; severe; -- said of the weather, of storms, and the like.

Marked by or expressing fierceness or savageness; ferocious, fierce, or cruel in quality.
Ill-bred; boorish; uncivil; discourteous; impolite.
Marked, by incivility; contrary to the requirements of. courtesy: as, rude conduct; a rude remark.
Rough; tempestuous; stormy: as, a rude gale; rude weather.
Robust; sturdy; rugged; vigorous.
Synonyms Ill-shaped, raw, uncouth, unformed.
7 and Vulgar, loutish, boorish, ill-bred, insolent, surly, churlish, gruff, brusk.
Harsh, inclement, violent, turbulent.
Barbarous; uncivilized; unpolished; ignorant.
Having a fierce or cruel disposition; ferocious; sanguinary; savage; brutal.
Mean; humble; little known or regarded; hence, as said of persons, low by birth or position.
Lacking cultivation, refinement, or elegance; clumsy; uncouth: as, rude verses; rude art.
Rough; crude; unwrought; unfashioned; ill-fashioned; without finish or shapeliness: as, a rude mass of material.
Rudely.

Unsympathetic, Uncaring, Thick skinned, Indurate, Dead, Deadened, Unreactive, Dull, Unaffected, Soulless, Numb, Unresponsive, Desensitized, Insensible, Callous

Ill mannered, Lowbred, Bounderish, Underbred, Early, Natural, Unprocessed, Raw, Crude, Primitive, Unrefined, Unmannered, Uncivil, Unmannerly, Impolite

Unsympathetic, Uncaring, Thick skinned, Indurate, Dead, Deadened, Unreactive, Dull, Unaffected, Soulless, Numb, Unresponsive, Desensitized, Insensible, Callous

Lowbred, Ill mannered, Ill bred, Bounderish, Early, Natural, Unprocessed, Raw, Crude, Primitive, Unrefined, Unmannered, Uncivil, Unmannerly, Impolite

ASOS Under Fire Over Culturally Insensitive Brand Name.
Passwords are case insensitive only for backward compatibility.
Polarization insensitive metamaterial absorber with wide incident angle.
Much to their dismay, Sheldon is still insensitive.
Part of the retina is insensitive to light.
Led Zeppelin had become arrogant, insensitive, and smug.
The political parties are insensitive to this issue.
Mouse sperm are insensitive to stimulation with progesterone.
However, such omission may in itself be insensitive.
Now they have default case-insensitive accent-insensitive collations, plus the binary collation.

Some of the comments on here are rude.
During this time her tone became increasingly rude.
They may be rude, anxious, or downright aggressive.
Horrible Experience, other kids were rude and privileged.
For those of you saying its rude its not rude it happens especially if you are a single parent.
The workers were rude on deliver and rude on the times we did carry out!
It may seem rude, but, you need a final head count and if they have not replied, then they are actually the rude ones!
If some customer was rude, you gained nothing by being rude in return and were likely to put off anyone else within earshot.
Telling people they are rude is generally not very useful, as well as being rude itself.
Catcalling and rude remarks and rude noises are a constant at women.