Correct spelling, explanation: intangible and untouchable do not share the same etymology, and they are not inherently similar in meaning. Intangible comes from the Latin word intangibilis, which is derived from the prefix in- (meaning not) and tangibilis (meaning able to be touched). So, intangible literally means not being able to be touched. It primarily refers to things that lack physical substance or cannot be perceived through touch. Untouchable has a different origin. It comes from the prefix un- (meaning not) and touchable, derived from the verb touch. Untouchable originally referred to the social class in India that was traditionally considered outside the caste system and hence untouchable by those within the caste hierarchy. Over time, the word has evolved to mean not able to be touched metaphorically, often implying being beyond criticism, reproach, or harm.

Definition of untouchable:
Adjective, not able to be punished, criticized, or changed in any way
The political leader’s popularity seemed untouchable, as every scandal that arose seemed to slide off without any impact on their support base.
In the competitive market, their brand became untouchable, dominating sales and leaving competitors struggling to keep up.

Collocations with untouchable:
Some of the most commonly used collocations include:
1. Untouchable status: referring to a position or level of achievement that is considered beyond reach or competition.
After winning three consecutive championships, the team achieved an untouchable status in the sport.
2. Untouchable reputation: describing a reputation that is impervious to damage or criticism.
Despite the scandal, the artist’s untouchable reputation in the art world remained intact.
3. Untouchable territory: referring to an area or domain that is considered off-limits or inviolable.
The company’s innovative technology gave it an untouchable territory in the market.
4. Untouchable wealth: describing wealth or financial resources that are so vast or secure that they are immune to economic downturns.
The billionaire’s untouchable wealth allowed them to weather any financial crisis without concern.

Correct spelling, explanation: intangible and untouchable cannot be used interchangeably because they convey different meanings and connotations. While there might be contexts where the meanings overlap slightly or where one could metaphorically substitute for the other, they are not interchangeable in most cases because they convey different nuances and implications. It’s essential to use each term appropriately based on the specific meaning and connotation you intend to convey. Intangible suggests something that is abstract, ethereal, or difficult to grasp, but it doesn’t inherently imply protection or immunity. Untouchable carries connotations of being beyond reach, invincible, or impervious to harm or influence. It often implies a sense of power, authority, or protection.