To contend in this phrase means to propose or argue for a particular proposition. Thus the question "Do you contend that the earth is banana-shaped?" means "Are you telling us that the world is banana-shaped?" or "Are you trying to prove to us that the world is banana-shaped?"
The noun forms of the verb 'contend' are contender, contention, and the gerund, contending.
to deal with; to oppose: The next boxer I'll have to contend with was formerly a champ.
To hold an opinion: I contend that his opinion is not based upon research.
Recontend.
The noun form of the adjective 'decisive' is decisiveness.
The noun form of the adjective 'angry' is angriness.The word 'angry' is the adjective form of the noun anger.
The noun form for the adjective 'proud' is proudness.A related noun form is pride.
The word 'famously' is the adverb form of the adjective 'famous'.The noun form of the adjective 'famous' is famousness.The word 'famous' is the adjective form of the noun fame.
The word 'weakest' is the superlative form of the adjective 'weak':positive: weakcomparative: weakersuperlative: weakest
The noun form for the verb "contend" is "contender", one who contends, formed by adding "-er" to the end of the verb. Another noun form is "contention"; we change the verb by adding the suffix "-tion".
The noun form for the adjective horrible is horribleness.
The noun form of the adjective 'prosperous' is prosperousness.A related noun form is prosperity.
The noun form of the adjective obedient is obedience.
As a noun, e.g. "Petitioners contend that the lower court erred when it found that respondents had not breached the contract."
The noun form of "religious" is "religion."
The noun form of "punish" is "punishment."
The word contest is a noun. The plural form is contests. It can also be a verb meaning to contend.
The noun form for the adjective glaring is glaringness. Another noun form is glare.
The noun form of "acrimonious" is "acrimoniousness."
Implication is the noun form of "imply."
ability is the noun form of the adjective able;conversation is the noun form of the verb to converse;dependence is the noun form of the verb to depend;departure is the noun form of the verb to depart;dwelling is the noun form of the verb to dwell;favorite is the noun form of the verb to favor;happiness is the noun form of the adjective happy;information is the noun form of the verb to inform;rarity is the noun form of the adjective rare;weakness is the noun form of the adjective weak;writer is the noun form of the verb to write;writing is also a noun form of the verb to write.